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排序方式: 共有407条查询结果,搜索用时 15 毫秒
1.
Jian Liu Peter J. A. Kleinman Helena Aronsson Don Flaten Richard W. McDowell Marianne Bechmann Douglas B. Beegle Timothy P. Robinson Ray B. Bryant Hongbin Liu Andrew N. Sharpley Tamie L. Veith 《Ambio》2018,47(6):657-670
Winter manure application elevates nutrient losses and impairment of water quality as compared to manure applications in other seasons. In conjunction with reviewing global distribution of animal densities, we reviewed worldwide mandatory regulations and voluntary guidelines on efforts to reduce off-site nutrient losses associated with winter manure applications. Most of the developed countries implement regulations or guidelines to restrict winter manure application, which range from a regulative ban to guidelines based upon weather and field management conditions. In contrast, developing countries lack such official directives, despite an increasing animal production industry and concern over water quality. An analysis of five case studies reveals that directives are derived from a common rationale to reduce off-site manure nutrient losses, but they are also affected by local socio-economic and biophysical considerations. Successful programs combine site-specific management strategies along with expansion of manure storage to offer farmers greater flexibility in winter manure management. 相似文献
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Md. Abdullah Yousuf Al Harun Joshua Johnson Md. Nazim Uddin Randall W. Robinson 《环境科学学报(英文版)》2015,27(7):1-11
Decomposition of plant litter is a fundamental process in ecosystem function, carbon and nutrient cycling and, by extension, climate change. This study aimed to investigate the role of temperature on the decomposition of water soluble phenolics(WSP), carbon and soil nutrients in conjunction with the phytotoxicity dynamics of Chrysanthemoides monilifera subsp. monilifera(boneseed) litter. Treatments consisted of three factors including decomposition materials(litter alone, litter with soil and soil alone), decomposition periods and temperatures(5–15, 15–25and 25–35°C(night/day)). Leachates were collected on 0, 5, 10, 20, 40 and 60 th days to analyse physico-chemical parameters and phytotoxicity. Water soluble phenolics and dissolved organic carbon(DOC) increased with increasing temperature while nutrients like SO-24 and NO-13 decreased. Speed of germination, hypocotyl and radical length and weight of Lactuca sativa exposed to leachates were decreased with increasing decomposition temperature. All treatment components had significant effects on these parameters. There had a strong correlation between DOC and WSP, and WSP content of the leachates with radical length of test species. This study identified complex interactivity among temperature, WSP, DOC and soil nutrient dynamics of litter occupied soil and that these factors work together to influence phytotoxicity. 相似文献
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Arunachalam Thangakumar Khader Syed Zameer Ahmed Syed Zameer Ahmed Sidhra Vetrivel Manimaran Syed Ameen Syed Tajudeen Ameer Khadharu Ibrahim Sheriff Prabhu Puniethaa Jayachandran Philp Robinson M. Sabu Dastageer 《Environmental science and pollution research international》2020,27(9):9058-9058
Environmental Science and Pollution Research - The correct presentation of the Author names are shown in this paper. 相似文献
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Serdeczny Olivia Adams Sophie Baarsch Florent Coumou Dim Robinson Alexander Hare William Schaeffer Michiel Perrette Mahé Reinhardt Julia 《Regional Environmental Change》2017,17(6):1585-1600
Regional Environmental Change - The repercussions of climate change will be felt in various ways throughout both natural and human systems in Sub-Saharan Africa. Climate change projections for this... 相似文献
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