Article
Agronomy
Erdinc Savasli, Oguz Onder, Ramis Dayioglu, Savas Belen, Mustafa Cakmak, Cemal Cekic, Necmettin Bolat, Nevzat Aydin, Omer Vanli, Sabit Ersahin
Summary: This study used optical sensors to estimate the grain and biomass yield of different wheat genotypes and found that SPAD ZD 55 was the most critical variable for predicting grain yield, significantly correlated with grain yield under three different water supply conditions. Similarly, NDVI ZD 31 and LAI ZD 41 were the most significant attributes for predicting biomass yield under all three water supply cases. A multiple linear regression equation using SPAD ZD 55, NDVI ZD 60, NDVI ZD 31, and NDVI ZD 24 as independent variables explained 52% of the total variation in grain yield of 49 genotypes. The genotypes showed consistent relationships between grain yield and SPAD ZD 55, and between biomass and LAI ZD 41 in all three water supply cases. These results hold great potential to predict grain yield of highly different wheat genotypes under varying water supply regimes. However, further research is needed to understand the relationships between yield and sensor measured variables in wheat genotypes across different environments and soil settings.
EUROPEAN JOURNAL OF AGRONOMY
(2023)
Article
Agronomy
Shanshan Song, Xiaokang Hu, Jiangling Zhu, Tianli Zheng, Fan Zhang, Chengjun Ji, Jianxiao Zhu
Summary: This study examined the differences in temperature sensitivity between leaf litter and fine root decomposition rates, finding leaf litter to be more sensitive to temperature changes. In addition to temperature, the initial C:N ratio and P cycling enzymes activity also influenced the decomposition rates of fine roots. Overall, soil temperature had a dominant effect on leaf litter decomposition rates.
Article
Environmental Sciences
Xiangzhuo Liu, Jean-Pierre Wigneron, Lei Fan, Frederic Frappart, Philippe Ciais, Nicolas Baghdadi, Mehrez Zribi, Thomas Jagdhuber, Xiaojun Li, Mengjia Wang, Xiaojing Bai, Christophe Moisy
Summary: In this study, a new IB VOD product was developed based on ASCAT data, showing superior performance in capturing spatial patterns of aboveground biomass and tree height compared to other VOD products. IB VOD also exhibited strong temporal correlations with deciduous broadleaf forests, woody savannas, and savannas.
REMOTE SENSING OF ENVIRONMENT
(2021)
Article
Environmental Sciences
Howard E. Epstein, Donald A. Walker, Gerald Frost, Martha K. Raynolds, Uma Bhatt, Ronald Daanen, Bruce Forbes, Jozsef Geml, Elina Kaarlejarvi, Olga Khitun, Artem Khomutov, Patrick Kuss, Marina Leibman, Georgy Matyshak, Nataliya Moskalenko, Pavel Orekhov, Vladimir E. Romanovsky, Ina Timling
Summary: Field sampling along the Eurasia Arctic Transect in northwestern Siberia showed that aboveground vegetation biomass, NDVI, and LAI all increased with the summer warmth index. Different soil types influenced the spatial patterns of these vegetation properties. Shrub biomass increased non-linearly with summer warmth index, while moss and lichen biomass responded differently to the increase in temperature.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Forestry
Ioan Dutca, Ronald E. McRoberts, Erik Naesset, Viorel N. B. Blujdea
Summary: Allometric models for predicting forest biomass often take nonlinear powerlaw forms and accommodating heteroscedasticity in the residual variance is necessary for accurate estimates. Weighting procedures and transformations were tested on biomass models, with some procedures showing more effectiveness in accommodating heteroscedasticity. Adding height as an additional predictor variable was recommended for better estimation accuracy.
FOREST ECOLOGY AND MANAGEMENT
(2022)
Article
Environmental Sciences
Youming Zhang, Na Ta, Song Guo, Qian Chen, Longcai Zhao, Fenling Li, Qingrui Chang
Summary: The use of a fast and accurate unmanned aerial vehicle (UAV) digital camera platform to estimate the leaf area index (LAI) of kiwifruit orchards is significant for growth monitoring, yield estimation, and field management. This study used high-resolution UAV images to extract spectral and textural parameters, which were then used to construct regression models for LAI estimation. The results showed that the model combining texture features had better prediction accuracy compared to the model based solely on spectral indices.
Article
Plant Sciences
Jun Pan, Craig R. See, Rui Wang, Junwei Luan, Jing Wang, Fan Liu, Xiankui Quan, Hongyang Chen, Xingchang Wang, Chuankuan Wang
Summary: Below-ground litter decomposition is an important source of nitrogen and phosphorus in forest soils, but roots also immobilize these nutrients during the process. However, the rates and drivers of nutrient immobilization and release from root litter remain poorly understood.
JOURNAL OF ECOLOGY
(2023)
Article
Ecology
Guitong Xing, Xiaofang Wang, Yamin Jiang, Huai Yang, Siwei Mai, Wenxian Xu, Enqing Hou, Xingzhao Huang, Qiu Yang, Wenjie Liu, Wenxing Long
Summary: The study found that during the process of forest succession from plantation to secondary forest and old-growth forest, soil organic carbon (SOC) increased significantly at 0-10 cm and 10-20 cm depths but not at deeper depths. The decrease in soil pH and the increase in total root biomass were the main factors contributing to SOC sequestration. Therefore, forest succession improved SOC accumulation.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2023)
Article
Environmental Sciences
Hang Jing, Guoliang Wang, Guobin Liu
Summary: The study found that nitrogen deposition has varied effects on the fungal community of root litter with different diameters, while the bacterial community remains stable and plays an important role in macromolecular decomposition.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Plant Sciences
Yaowen Xu, Runxia Huang, Benzhi Zhou, Xiaogai Ge
Summary: Plant fine-root decomposition is a key process for nutrient reentry into the soil. Previous studies have focused on major elements, with limited attention given to trace elements. This study investigated the decomposition dynamics of 10 mineral elements during fine-root decomposition in moso bamboo. Results showed that root diameter and decomposition time significantly affected the remaining percentages of certain elements.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Jingjing Wu, Yufang Lu, Dongwei Di, Yue Cai, Chuanhui Zhang, Herbert J. Kronzucker, Weiming Shi, Kejun Gu
Summary: Elevated CO2 levels can increase rice biomass and yield, with responses varying significantly among different cultivars. A T-DNA insertion mutant in japonica rice showed a significantly enhanced response to elevated CO2, with increased root biomass and specific responses in coarse and thin lateral roots. Knockout of the OsGF14b gene may improve rice's response to elevated CO2 by enhancing carbon allocation to different root types.
JOURNAL OF PLANT PHYSIOLOGY
(2022)
Article
Agronomy
Songyan Zou, Doudou Li, Nan Di, Jinqiang Liu, Lingya Li, Yang Liu, Benye Xi, Mark Coleman
Summary: This study reveals that soil water availability can impact biomass allocation and determine the soil layer with high exploration intensity, but these effects are influenced by stand development. As stands develop, fine root functional divergence may occur gradually.
Article
Agronomy
Shu Meiyan, Shen Mengyuan, Dong Qizhou, Yang Xiaohong, Li Baoguo, Ma Yuntao
Summary: In this study, a tridimensional concept model for maize above-ground biomass (AGB) estimation using unmanned aerial vehicle (UAV) images was proposed. By integrating leaf area index (LAI) and plant height (PH), the model improved the accuracy and universality of AGB estimation. Experimental results showed that the tridimensional concept model could better estimate maize AGB compared to the model based on the normalized difference vegetation index (NDVI).
FIELD CROPS RESEARCH
(2022)
Article
Environmental Sciences
Xiaoxiang Zhao, Qiuxiang Tian, Anders Michelsen, Mengzhen Lu, Boshen Ren, Lin Huang, Rudong Zhao
Summary: The study examined the effects of climate warming on the fine root traits of woody plants. It was found that warming increased the nitrogen concentration, root mortality, and respiration of fine roots, but decreased the phosphorus concentration, carbon to nitrogen ratio, and nonstructural carbohydrates concentration. Additionally, the study found that the effects of warming on different fine root traits were influenced by the duration and magnitude of warming, as well as the mean annual temperature and precipitation. These findings have important implications for soil nutrient cycling and carbon stocks in shrub and tree-dominated ecosystems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Xiaoxiang Zhao, Qiuxiang Tian, Lin Huang, Qiaoling Lin, Junjun Wu, Feng Liu
Summary: Nitrogen deposition has complex effects on fine root traits in forest ecosystems, mainly affecting root nutrient content and stoichiometry. Additionally, it increases fine root respiration and decreases fine root biomass, root tissue density, and fungal colonization with longer duration of N deposition. Fine root traits are also regulated by abiotic factors such as N form, forest type, and soil depth.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Gyana Ranjan Sahoo, Singam Laxmana Swamy, Alka Mishra, Tarun Kumar Thakur
Summary: This study evaluated the critical factors affecting the growth of Pongamia pinnata seedlings, finding that nitrogen was more critical than light, with the Raipur seed source showing outstanding performance. High nitrogen and light regimes increased shoot/root ratios, and appropriate genetic resources combined with managerial interventions are crucial for seedling development.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Multidisciplinary Sciences
Tarun Kumar Thakur, D. K. Patel, Joystu Dutta, Anirudh Kumar, Sandeep Kaushik, Arvind Bijalwan, Mohammed S. Fnais, Kamal Abdelrahman, Mohammad Javed Ansari
Summary: This study focuses on the decadal land use changes along the upper catchment area of the Narmada river basin, analyzing vegetation spatially using GIS technology to identify six main land cover types. The study highlights the intensification of anthropogenic stress factors, leading to urbanization and deforestation causing degradation of the ecosystem, and calls for advocacy for river health at the policy level.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2021)
Article
Environmental Sciences
Sandeep Kumar, Arvind Bijalwan, Bhupendra Singh, Deepa Rawat, Aalok G. Yewale, Manoj Kumar Riyal, Tarun Kumar Thakur
Summary: The study estimated carbon sequestration potential of Q. leucotrichophora-based traditional agroforestry systems and natural forest in Garhwal Himalaya, India. It found that higher elevations stored more carbon and soil organic carbon showed a negative relationship with depth and elevation. The study suggests that the agroforestry systems can be models to combat increasing carbon and stabilize climate change in the Central Himalayan region.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Chemistry, Multidisciplinary
Nitesh Singh, Aadil Mansoori, Gitanjali Jiwani, Amolkumar U. Solanke, Tarun K. Thakur, Rakesh Kumar, Mona Chaurasiya, Anirudh Kumar
Summary: Plant extracts, especially from Schefflera vinosa leaves, showed high antioxidant, phenolic, and flavonoid activities in this study. The extracts exhibited strong free radical scavenging activities and antimicrobial effects against rice pathogens like Magnaporthe oryzae and Xanthomonas oryzae pv. oryzae. The compounds identified through FTIR and GC-MS analysis could potentially inhibit the growth of these pathogens.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Biology
Joystu Dutta, Sufia Zaman, Tarun Kumar Thakur, Sandeep Kaushik, Abhijit Mitra, Poonam Singh, Ravinder Kumar, Ali Tan Kee Zuan, Mohammad Shahzad Samdani, Sulaiman Ali Alharbi, Rahul Datta
Summary: This study investigated the bioaccumulation pattern of toxic heavy metals in fishes from the East Kolkata Wetlands and found that the accumulation varied with seasons and years.
SAUDI JOURNAL OF BIOLOGICAL SCIENCES
(2022)
Article
Food Science & Technology
Alka Mishra, Singam Laxmana Swamy, Tarun Kumar Thakur, Rajeev Bhat, Arvind Bijalwan, Amit Kumar
Summary: This study explores the role of wild edible plants (WEPs) in meeting the food, nutrition, and income needs of indigenous communities in Central India, revealing differences among ethnic communities and locations. The results suggest that WEPs contribute significantly to household income, supplementing essential nutrients and potentially fulfilling dietary needs if consumed in recommended portions.
Article
Environmental Sciences
Tarun K. Thakur, Digvesh K. Patel, Anita Thakur, Anirudh Kumar, Arvind A. Bijalwan, Jahangeer A. Bhat, Amit Kumar, M. J. Dobriyal, Munesh Kumar, Amit Kumar
Summary: This study analyzed plant diversity, biomass, carbon sequestration potential, and net primary productivity of four vegetation types in the dry tropical forest ecosystem of central India. The findings showed significant variations in carbon storage and productivity among different vegetation types, with dense mixed forest exhibiting the highest potential.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2021)
Article
Ecology
Mahesh Prasad Barya, Amit Kumar, Tarun Kumar Thakur
Summary: Constructed wetlands using phytoremediation plants have proven to be an efficient and environmentally-friendly method for removing heavy metals from contaminated wastewater. In this study, Canna indica and Acorus calamus plants showed high rates of metal removal compared to other plants commonly used in phytoremediation. This research emphasizes the potential of ornamental plants for wastewater treatment and highlights the importance of by-product generation in phytoremediation.
Article
Ecology
Amit Kumar, Saurabh Mishra, Sanjeev Bakshi, Pooja Upadhyay, Tarun Kumar Thakur
Summary: Lakes, especially shallow ones, have a disproportionate impact on greenhouse gas emissions, attracting global attention due to their potential contribution to global warming and climate change. Eutrophication has been identified as a critical factor in these emissions, but the role of lake trophic state index and important water quality parameters is still debated. This review quantifies greenhouse gas emissions from Chinese lakes and systematically analyzes the factors affecting these emissions.
Review
Chemistry, Analytical
Amit Kumar, Saurabh Mishra, Rajiv Pandey, Zhi Guo Yu, Munesh Kumar, Kuan Shiong Khoo, Tarun Kumar Thakur, Pau Loke Show
Summary: Microplastics less than 5 mm in size are persistent pollutants that significantly impact terrestrial ecosystems by degrading soil fertility and microbiomes. These microplastics lead to changes in soil characteristics, nutrient cycling, and potential climate risks. Understanding their sources, composition, abundance, life cycle, and transport is a major challenge and important global topic of debate among scientists. This review focuses on bridging the knowledge gap by discussing the potential sources, transport, and disintegration of microplastics in terrestrial ecosystems, as well as their effects on soil characteristics and nutrient cycling. The identified scientific gaps can aid environmentalists, microbiologists, hydrologists, and policymakers in understanding microplastic pollution and exploring future engineering solutions.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2023)
Review
Environmental Sciences
Bhamini Pandey, Jigyasa Pathak, Poonam Singh, Ravinder Kumar, Amit Kumar, Sandeep Kaushik, Tarun Kumar Thakur
Summary: In recent decades, the accumulation and fragmentation of plastics on the planet's surface have caused long-term climatic and health risks. Microplastics, particularly those smaller than 5 mm, have drawn significant attention in the scientific community due to their bioaccumulation, non-biodegradability, and ecotoxicological effects on living organisms. This study explains the generation, transportation, and disposal of microplastics in the environment based on their sources and properties. The impact of COVID-19 on global plastic waste production is also examined. The paper further discusses various physical and chemical techniques employed for the quantification and identification of microplastics. Insight into conventional and advanced methods for removing microplastics from aquatic systems is provided. The review findings contribute to a deeper understanding of the toxicity of microplastics on humans, aquatic organisms, and soil ecosystems, and highlight the global efforts and measures taken to combat microplastic waste.
Editorial Material
Environmental Sciences
Amit Kumar, Tarun Kumar Thakur, Zhi Guo Yu
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Review
Environmental Sciences
Tarun Kumar Thakur, Mahesh Prasad Barya, Joystu Dutta, Pritam Mukherjee, Anita Thakur, Singam Laxmana Swamy, James T. Anderson
Summary: The use of macrophytes, especially in constructed wetlands, has proven to be an effective method for removing pollutants from contaminated water. These wetland systems utilize natural processes and the interactions between plants and microbes to improve water quality. Water hyacinth and other aquatic weeds have shown potential in reducing pollution levels and pathogens in water bodies. This review emphasizes the importance of utilizing hydrophyte-microbe associations in constructed wetlands for sustainable management of freshwater ecosystems and resource recovery.
Article
Environmental Studies
Naveen Tariyal, Arvind Bijalwan, Sumit Chaudhary, Bhupendra Singh, Chatar Singh Dhanai, Sumit Tewari, Munesh Kumar, Sandeep Kumar, Marina M. S. Cabral Pinto, Tarun Kumar Thakur
Summary: Bhimal (Grewia oppositifolia) is an important agroforestry tree species in the Himalayan region, used for fodder, fuel, and fiber. A study in Garhwal Himalaya, India, found that the growth and yield of barnyard millet and finger millet were lower in G. oppositifolia-based agroforestry systems compared to sole crops. However, the system has benefits in terms of carbon sequestration and socioecological relevance.
Article
Forestry
Tarun Kumar Thakur, Digvesh Kumar Patel, Arvind Bijalwan, Mammohan J. Dobriyal, Anirudh Kumar, Anita Thakur, Abhishek Bohra, Jahangeer A. Bhat
TREES FORESTS AND PEOPLE
(2020)
