Browse all research gap analyses
Every gap analysis in the library, ordered by evidence strength. Each one is distilled from what real papers say is still unresolved — mostly the research gaps and future work their authors state, plus limitations, challenges and abstract passages — and its page shows representative passages from the papers behind it.
Showing 1–60 of 1,987 gap analyses · page 1 of 34
- Urban agriculture soils are commonly amended with compost to improve fertility, yet the functional responses of these systems to biochar additions across application rates remain poorly understood.
Urban agriculture soils are commonly amended with compost to improve fertility, yet the functional responses of these systems to biochar additions across application rates remain poorly understood.
Agriculture · 123 papers · avg 2025.3 · strong evidence - Grassland degradation is a global ecological crisis that profoundly alters aboveground vegetation and soil properties, yet its impacts on soil microbial co-occurrence networks remain poorly understood
While these microbial domains are ubiquitous and extremely diverse, little is known about how they respond to environmental changes in urban soil ecosystems and what ecological processes shape them.
Agriculture · 62 papers · avg 2025 · strong evidence - Abstract Background and aims Soil microbial communities are vital for ecosystem function and biodiversity, yet their composition and drivers in Mediterranean agroforestry systems remain underexplored.
Abstract Background and aims Soil microbial communities are vital for ecosystem function and biodiversity, yet their composition and drivers in Mediterranean agroforestry systems remain underexplored.
Agriculture · 43 papers · avg 2025 · strong evidence - Future studies should analyze the impact of teacher competence and infrastructure support on student outcomes in inclusive education. Future studies should explore the effectiveness of different train
Future studies should analyze the impact of teacher competence and infrastructure support on student outcomes in inclusive education. Future studies should explore the effectiveness of different training programs for teachers in improving t
Education · 42 papers · avg 2025.8 · strong evidence - The findings revealed six (6) significant themes, including “Limited Knowledge & Skills on Other Available online platforms/Technology teaching,” “available gadgets in online classes,” “Available Inte
The findings revealed six (6) significant themes, including “Limited Knowledge & Skills on Other Available online platforms/Technology teaching,” “available gadgets in online classes,” “Available Internet Connectivity, Unsteadiness and Low
Education · 42 papers · avg 2025.8 · strong evidence - Climate warming is exacerbating soil drought and precipitation events. Soil respiration is sensitive to environmental conditions. There is a need to develop more accurate models of soil carbon dynamic
There is a limited understanding of how pasture degradation, pasture improvement, and tree-based grazing affect soil fertility and soil organic carbon storage. The study aims to address this knowledge gap.
Agriculture · 41 papers · avg 2024.9 · strong evidence - However, the relative importance of biotic and abiotic N immobilization at different levels of organic N substitution and the subsequent effects on N utilization in paddy soils are not well elucidated
However, the relative importance of biotic and abiotic N immobilization at different levels of organic N substitution and the subsequent effects on N utilization in paddy soils are not well elucidated.
Agriculture · 41 papers · avg 2025.1 · strong evidence - Understanding how farmers make adaptation decisions under increasing rainfall-related risks is critical for effective climate risk management, yet evidence remains limited on the role of behavioural f
Understanding how farmers make adaptation decisions under increasing rainfall-related risks is critical for effective climate risk management, yet evidence remains limited on the role of behavioural factors in shaping these decisions.
Earth Science · 37 papers · avg 2025.6 · strong evidence - The study identifies challenges related to the accuracy of AI-generated content and students' overreliance on GenAI. The study also highlights the lack of structured guidance in teacher education for
The study identifies challenges related to the accuracy of AI-generated content and students' overreliance on GenAI. The study also highlights the lack of structured guidance in teacher education for the critical use of GenAI as a challenge
Education · 28 papers · avg 2026 · strong evidence - Investigating the challenges in clinical transformation of microbiota-targeted strategies, - Analyzing the mechanism of action and experimental efficacy of each microbiota-targeted strategy, - Providi
Investigating the challenges in clinical transformation of microbiota-targeted strategies, - Analyzing the mechanism of action and experimental efficacy of each microbiota-targeted strategy, - Providing new practical ideas for PF treatment,
Medicine · 28 papers · avg 2025.3 · strong evidence - The findings also reveal that the adaptive capacity in the study area is significantly moderate in terms of adaptation to climate change, and the adaptation strategies have focused on short-term actio
Theoretical development remains fragmented and of greater concern, a systems perspective is lacking in empirical studies: Most articles focus solely on one issue – climate change – and there is almost no cross‐analysis between boundaries.
Earth Science · 25 papers · avg 2025 · strong evidence - Nitrogen (N) fertilization is known to influence soil microbial communities and crop yield, but how N affects the bacterial community and the link to crop yield across different soil types remains poo
Nitrogen (N) fertilization is known to influence soil microbial communities and crop yield, but how N affects the bacterial community and the link to crop yield across different soil types remains poorly understood.
Agriculture · 25 papers · avg 2025.1 · strong evidence - During the electrochemical CO 2 reduction reaction (CO 2 RR), copper catalysts continuously undergo structural evolution, which is less controllable, and its impact on the product distribution of CO 2
During the electrochemical CO 2 reduction reaction (CO 2 RR), copper catalysts continuously undergo structural evolution, which is less controllable, and its impact on the product distribution of CO 2 RR remains unclear.
Chemistry · 24 papers · avg 2024.9 · strong evidence - Investigating the impact of other environmental factors on microbial communities, - Comparing the results with other types of ecosystems, - Studying the effects of salinity on microbial communities in
Investigating the impact of other environmental factors on microbial communities, - Comparing the results with other types of ecosystems, - Studying the effects of salinity on microbial communities in different regions
Agriculture · 23 papers · avg 2024.4 · strong evidence - Abstract Field observations show that subtropical forests can accumulate soil organic carbon (SOC) at high rate; however, the key mechanisms of SOC accumulation in subtropical forests remain unclear.
Abstract Field observations show that subtropical forests can accumulate soil organic carbon (SOC) at high rate; however, the key mechanisms of SOC accumulation in subtropical forests remain unclear.
Agriculture · 21 papers · avg 2024.8 · strong evidence - The hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are still challenging. There is a need for sustainable green energy sources to reduce overconsumption of fossil fuels and miti
However, its efficiency is limited by a slow 6‐electron transfer process, necessitating advanced electrocatalysts to accelerate the urea oxidation reaction (UOR) and moderate overpotential, thereby cutting energy losses.
Chemistry · 21 papers · avg 2025 · strong evidence - The current debate about artificial intelligence in education is misframed, focusing on adopting technology rather than developing pedagogical intelligence. There is a lack of understanding of how to
The current debate about artificial intelligence in education is misframed, focusing on adopting technology rather than developing pedagogical intelligence. There is a lack of understanding of how to develop pedagogical intelligence in educ
Education · 21 papers · avg 2025.8 · strong evidence - The development of effective antimicrobial agents. The need for environmentally friendly and cost-effective methods for the synthesis of silver nanoparticles. The potential toxicity of silver nanopart
The development of effective antimicrobial agents. The need for environmentally friendly and cost-effective methods for the synthesis of silver nanoparticles. The potential toxicity of silver nanoparticles to human cells.
Chemistry · 20 papers · avg 2025.4 · strong evidence - Whether conservation management can coordinate root adaptation and arbuscular mycorrhizal fungal (AMF) responses to ameliorate the compacted soil environment and improve crop growth remains unclear.
Whether conservation management can coordinate root adaptation and arbuscular mycorrhizal fungal (AMF) responses to ameliorate the compacted soil environment and improve crop growth remains unclear.
Agriculture · 20 papers · avg 2025.1 · strong evidence - As an exogenous carbon input, microplastics (MPs), especially biodegradable MPs, may significantly disrupt soil microbial communities and soil element cycling (CNPS cycling), but few studies have focu
As an exogenous carbon input, microplastics (MPs), especially biodegradable MPs, may significantly disrupt soil microbial communities and soil element cycling (CNPS cycling), but few studies have focused on this.
Agriculture · 19 papers · avg 2025.4 · strong evidence - Further studies on the optimization of the FeTiO3/BiOCl heterojunction, - investigation of the system's performance in real-world applications, - development of new photocatalytic materials with impro
Abstract Heterogeneous photocatalysis is a promising advanced oxidation process for the removal of organic pollutants, yet its efficiency is often limited by thermodynamic barriers and insufficient pollutant activation.
Chemistry · 18 papers · avg 2024.9 · strong evidence - Although the impacts of N deposition on soil microbial communities have been reasonably well studied, microorganism responses to the N addition combined with the seasonal change have rarely been repor
Although the impacts of N deposition on soil microbial communities have been reasonably well studied, microorganism responses to the N addition combined with the seasonal change have rarely been reported.
Agriculture · 18 papers · avg 2024.7 · strong evidence - The distribution of the soil aggregate structure and its associated organic carbon along the elevation gradient remains unclear, but it may be crucial for the stabilization of soil carbon pools in mou
The distribution of the soil aggregate structure and its associated organic carbon along the elevation gradient remains unclear, but it may be crucial for the stabilization of soil carbon pools in mountainous forests.
Agriculture · 18 papers · avg 2025.4 · strong evidence - 3From stories to literacy: oral narrative macrostructure and reading… In particular, little is known about whether narrative skills in the home language (L1) can support later reading comprehension in
3From stories to literacy: oral narrative macrostructure and reading… In particular, little is known about whether narrative skills in the home language (L1) can support later reading comprehension in the societal language (L2). Although ea
Education · 18 papers · avg 2010.5 · strong evidence - The study identifies the challenge of introducing and integrating GenAI into established teaching activities. The research also highlights the need for teachers to develop pedagogical strategies for u
The study identifies the challenge of introducing and integrating GenAI into established teaching activities. The research also highlights the need for teachers to develop pedagogical strategies for using AI in the classroom. The study note
Education · 18 papers · avg 2025.9 · strong evidence - The field lacks a clear account of what constitutes an effective dose of exercise for cognitive ageing. Current trials quantify physical exposure more consistently than cognitive-motor operations. The
The field lacks a clear account of what constitutes an effective dose of exercise for cognitive ageing. Current trials quantify physical exposure more consistently than cognitive-motor operations. There is a need for a systematic review and
Psychology · 17 papers · avg 2025.8 · strong evidence - Phosphorus (P), an essential yet often limiting nutrient in agroecosystems, may be sensitive to MPs inputs, while the mechanisms governing MPs‐induced alterations in soil P‐cycling remain poorly under
Phosphorus (P), an essential yet often limiting nutrient in agroecosystems, may be sensitive to MPs inputs, while the mechanisms governing MPs‐induced alterations in soil P‐cycling remain poorly understood.
Agriculture · 16 papers · avg 2025.5 · strong evidence - The biological source of organic fertilizers determines their specific functional characteristics, but few studies have systematically examined these functions or assessed their health risk to soil ec
The biological source of organic fertilizers determines their specific functional characteristics, but few studies have systematically examined these functions or assessed their health risk to soil ecology.
Agriculture · 16 papers · avg 2024.9 · strong evidence - Excessive basal and tillering nitrogen (BTN) application in rice production causes substantial N losses and environmental costs, yet practical soil fertility thresholds to guide safe BTN reduction (RB
Excessive basal and tillering nitrogen (BTN) application in rice production causes substantial N losses and environmental costs, yet practical soil fertility thresholds to guide safe BTN reduction (RBTN) have not been established.
Agriculture · 16 papers · avg 2025.1 · strong evidence - Although organic ameliorant has profound effects on saline soil quality, how soil quality index, crop productivity, and ecosystem multi-functionality respond to combined organic ameliorants remains un
Although organic ameliorant has profound effects on saline soil quality, how soil quality index, crop productivity, and ecosystem multi-functionality respond to combined organic ameliorants remains unclear.
Agriculture · 16 papers · avg 2025.3 · strong evidence - There has been a growing use of remote sensing, climate data, and their combination to estimate yields, but the optimal indices and time window for wheat yield prediction in arid regions remain unclea
There has been a growing use of remote sensing, climate data, and their combination to estimate yields, but the optimal indices and time window for wheat yield prediction in arid regions remain unclear.
Agriculture · 16 papers · avg 2025.4 · strong evidence - There is a lack of knowledge on microplastic pollution in tropical rivers. The study addresses this gap by examining the relationships between microplastic abundance and river water physicochemical an
There is a lack of knowledge on microplastic pollution in tropical rivers. The study addresses this gap by examining the relationships between microplastic abundance and river water physicochemical and hydrological parameters.
Chemistry · 16 papers · avg 2025.3 · strong evidence - Deep learning offers a non-destructive route to automated fruit-quality screening; however, the literature has largely pursued peak accuracy using progressively heavier network backbones, leaving the
Deep learning offers a non-destructive route to automated fruit-quality screening; however, the literature has largely pursued peak accuracy using progressively heavier network backbones, leaving the computational cost of that accuracy and
Computer Science · 16 papers · avg 2025.9 · strong evidence - Limited research has emphasized the need for expanded exploration of the relationship between groundwater storage variations and gravity fields. The study identifies a gap in understanding the impact
Limited research has emphasized the need for expanded exploration of the relationship between groundwater storage variations and gravity fields. The study identifies a gap in understanding the impact of climate change factors on groundwater
Earth Science · 15 papers · avg 2024.9 · strong evidence - There is a lack of systematic information on wheatbelt water salinity in streams, dams, wells, and bores. The nature, extent, and possible causes of salinity problems in non-irrigated agricultural are
There is a lack of systematic information on wheatbelt water salinity in streams, dams, wells, and bores. The nature, extent, and possible causes of salinity problems in non-irrigated agricultural areas are not well understood.
Agriculture · 15 papers · avg 2022.1 · strong evidence - In the Yellow River Basin (YRB), a critical agricultural region experiencing rapid greening, the spatiotemporal patterns and irrigation management implications of structural overshoot drought remain u
In the Yellow River Basin (YRB), a critical agricultural region experiencing rapid greening, the spatiotemporal patterns and irrigation management implications of structural overshoot drought remain unclear.
Agriculture · 15 papers · avg 2025 · strong evidence - There is a need for sustainable and eco-friendly methods for water disinfection and biomedical applications. Conventional physical and chemical methods of nanoparticle synthesis are limited due to hig
There is a need for sustainable and eco-friendly methods for water disinfection and biomedical applications. Conventional physical and chemical methods of nanoparticle synthesis are limited due to high energy costs and toxicities.
Chemistry · 15 papers · avg 2025.7 · strong evidence - Encourage students to use AI and their own creativity in a balanced way. Students should use AI tools as drafting aids and create a final solution after brainstorming. Students should use AI tools to
Encourage students to use AI and their own creativity in a balanced way. Students should use AI tools as drafting aids and create a final solution after brainstorming. Students should use AI tools to build their foundational skills, like gr
Education · 15 papers · avg 2025.9 · strong evidence - Representing temperatures in complex terrain, such as mountains and coastlines, is a challenge for climate models. Observational uncertainty complicates bias assessment. Extreme precipitation remains
Representing temperatures in complex terrain, such as mountains and coastlines, is a challenge for climate models. Observational uncertainty complicates bias assessment. Extreme precipitation remains particularly difficult to capture.
Earth Science · 15 papers · avg 2026 · strong evidence - To investigate the impact of secondary ice production on other types of clouds. To improve the representation of secondary ice production in cloud models. To investigate the impact of secondary ice pr
To investigate the impact of secondary ice production on other types of clouds. To improve the representation of secondary ice production in cloud models. To investigate the impact of secondary ice production on precipitation and cloud radi
Earth Science · 15 papers · avg 2024.8 · strong evidence - Heatwaves remain difficult to simulate accurately in numerical weather prediction and regional climate models. In tropical regions like Bangladesh, strong monsoonal circulations and heterogeneous land
Further study of the Asian monsoon system and its drivers. Application of the study's methods to other regions to reconstruct past monsoon dynamics. Integration of the study's findings into climate models to improve their performance.
Earth Science · 14 papers · avg 2025.9 · strong evidence - Existing approaches primarily characterize the physical evolution of slopes and provide limited insight into post-disaster societal impacts and public responses. There is a lack of social dimensions i
Existing approaches primarily characterize the physical evolution of slopes and provide limited insight into post-disaster societal impacts and public responses. There is a lack of social dimensions in traditional monitoring data for landsl
Earth Science · 14 papers · avg 2025.7 · strong evidence - However, the depth-dependent mechanisms by which straw management–tillage systems regulate aggregate stability, labile carbon distribution, and soil quality under long-term straw return remain unclear
However, the depth-dependent mechanisms by which straw management–tillage systems regulate aggregate stability, labile carbon distribution, and soil quality under long-term straw return remain unclear.
Agriculture · 14 papers · avg 2025.2 · strong evidence - Assessing the WMC-RTDETR methodology for other agricultural crops, - exploring improvements in deep learning in real-world field environments, - developing more efficient and accurate methods for dete
assessing the WMC-RTDETR methodology for other agricultural crops, - exploring improvements in deep learning in real-world field environments, - developing more efficient and accurate methods for detecting pests and diseases
Agriculture · 14 papers · avg 2025.7 · strong evidence - There is a need to understand the effect of pyrolysis temperature on the adsorption performance of tea waste biochar. There is a lack of studies on the characterization of biochar produced from tea wa
There is a need to understand the effect of pyrolysis temperature on the adsorption performance of tea waste biochar. There is a lack of studies on the characterization of biochar produced from tea waste.
Agriculture · 14 papers · avg 2024.9 · strong evidence - The need for alternative fertilization strategies that balance productivity with sustainability. The lack of research on the effects of organomineral fertilizers on maize growth and nutrient uptake.
The need for alternative fertilization strategies that balance productivity with sustainability. The lack of research on the effects of organomineral fertilizers on maize growth and nutrient uptake.
Agriculture · 14 papers · avg 2025.2 · strong evidence - However, few studies have examined the effects of different straw return methods on soil structure, soil organic carbon content and maize yield or the potential relationships between those variables.
However, few studies have examined the effects of different straw return methods on soil structure, soil organic carbon content and maize yield or the potential relationships between those variables.
Agriculture · 14 papers · avg 2025.4 · strong evidence - While many studies have focused on mean or extreme precipitation, the response of water availability seasonality, influencing yearly water distribution beyond individual extremes, to human-induced cli
While many studies have focused on mean or extreme precipitation, the response of water availability seasonality, influencing yearly water distribution beyond individual extremes, to human-induced climate change remains underexplored.
Earth Science · 14 papers · avg 2024.5 · strong evidence - The influence of restoration interventions, including soil amendments and dredged sediment placement, within coastal mangrove systems on ecosystem-scale C fluxes remains poorly understood and warrants f
The influence of restoration interventions, including soil amendments and dredged sediment placement, within coastal mangrove systems on ecosystem-scale C fluxes remains poorly understood and warrants further examina- tion across the region.
Earth Science · 14 papers · avg 2022.7 · strong evidence - The Delta State Ministry of Secondary Education should institutionalize periodic professional development programmes on ethical leadership for principals, with emphasis on integrity, accountability, t
The Delta State Ministry of Secondary Education should institutionalize periodic professional development programmes on ethical leadership for principals, with emphasis on integrity, accountability, transparency and fairness in school admin
Education · 14 papers · avg 2026 · strong evidence - Continuously provide preceptors with guidance, feedback, and support via mentoring. Preceptors will require training, and new nurses need to be actively involved in learning and receiving feedback. Po
Continuously provide preceptors with guidance, feedback, and support via mentoring. Preceptors will require training, and new nurses need to be actively involved in learning and receiving feedback. Policymakers can establish standards for p
Medicine · 14 papers · avg 2026 · strong evidence - The use of new generations of gravitational wave observatories to test the primordial black hole hypothesis. The exploration of the asteroid mass range for primordial black holes. The development of n
The use of new generations of gravitational wave observatories to test the primordial black hole hypothesis. The exploration of the asteroid mass range for primordial black holes. The development of new theoretical models to explain the pri
Physics · 14 papers · avg 2026 · strong evidence - Previous studies have often overlooked the integration of topographic and remote sensing indices into advanced predictive models. There is a need for more accurate soil erosion risk mapping models tha
Previous studies have often overlooked the integration of topographic and remote sensing indices into advanced predictive models. There is a need for more accurate soil erosion risk mapping models that consider multiple environmental indica
Earth Science · 13 papers · avg 2025.5 · strong evidence - Further study of the implications of the framework for our understanding of the universe on large scales. Investigation of the potential applications of the framework to other areas of cosmology. Test
Further study of the implications of the framework for our understanding of the universe on large scales. Investigation of the potential applications of the framework to other areas of cosmology. Testing of the framework against future obse
Physics · 13 papers · avg 2026 · strong evidence - There is a lack of research on maize-legume intercropping under reduced fertilizer levels in Nepal. The potential of intercropping to improve land productivity and farm income is not well understood.
There is a lack of research on maize-legume intercropping under reduced fertilizer levels in Nepal. The potential of intercropping to improve land productivity and farm income is not well understood.
Agriculture · 13 papers · avg 2024.5 · strong evidence - Under a full straw returning system, the relationship between soil bacterial community diversity and straw decomposition, yield, and the combined application of slow-release nitrogen and urea remains
Under a full straw returning system, the relationship between soil bacterial community diversity and straw decomposition, yield, and the combined application of slow-release nitrogen and urea remains unclear.
Agriculture · 13 papers · avg 2025.1 · strong evidence - Agroforestry has been proposed as a regenerative strategy to restore these functions through vegetation diversification, yet its ecological effects at the farm scale remain insufficiently documented,
There is a need to evaluate the impact of intercropping on biodiversity in agroecosystems. The effects of Paulownia-buckwheat intercropping on various agroecosystem components are not well understood.
Agriculture · 13 papers · avg 2025.3 · strong evidence - Few studies have quantified the cooling effects of urban parks over multiple decades. There is a need for a multi-decadal assessment of urban surface temperatures. The impact of vegetation moisture on
In recent decades, the significant development of urban agglomerations has intensified the complex interaction and comprehensive impact of the UHI effect, but the spatiotemporal pattern of regional heat islands has been poorly understood.
Earth Science · 12 papers · avg 2025.3 · strong evidence - The mechanistic linkages between fast-ice variability and large-scale climatic oscillations have remained inadequately explored. The study aims to address this gap by investigating the seasonal-scale
Abstract While previous studies have demonstrated that the El Niño-Southern Oscillation (ENSO) can impact global climate systems on the intraseasonal timescale, how ENSO affects the intraseasonal variability of the Siberian high (SH) still
Earth Science · 12 papers · avg 2025.5 · strong evidence - However, studies on how ARGs are enriched on microplastics and how the presence of microplastics affects pathogens and ARGs in leachates and soil remain scarce despite growing interest in this area.
However, studies on how ARGs are enriched on microplastics and how the presence of micro- plastics affects pathogens and ARGs in leachates and soil remain scarce despite growing interest in this area.
Agriculture · 12 papers · avg 2025.3 · strong evidence