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农田水利工程管理面临的困境及对策

open access: yes水电科技, 2023
农田水利关系着我国农业的未来发展,同时也关系到农村居民的经济水平,然而农田水利工程管理,却面临前所未有的挑战,自然环境成为制约农田水利工程的障碍,农田水利年久失修,基础设施得不到补充,现代化技术无法形成网络覆盖,现代化设施无法支援到位,同时政府管理缺失也是农田水利工程所面临的另一个难题,因此在农田水利工程管理上必须拿出相应的对策。
卫中 何
semanticscholar   +1 more source

中国农田面源污染研究综述

open access: yes节能环保, 2022
由于农业活动的广泛性和普遍性,农田面源污染已成为中国最大的污染源。论文基于中国农田面源的污染现状,分析了农田面源污染的主要来源及其对水环境的影响,阐述了农田面源污染的产生机理,并在此基础上讨论了中国农田面源污染的控制模式,以期为中国农业面源污染防控提供参考。
黄 智华, 谷 宏亮
semanticscholar   +1 more source

Estimation of spatiotemporal trends in bat abundance from mortality data collected at wind turbines

open access: yesConservation Biology, Volume 35, Issue 1, Page 227-238, February 2021., 2021
Abstract Renewable energy sources, such as wind energy, are essential tools for reducing the causes of climate change, but wind turbines can pose a collision risk for bats. To date, the population‐level effects of wind‐related mortality have been estimated for only 1 bat species. To estimate temporal trends in bat abundance, we considered wind turbines
Christina M. Davy   +2 more
wiley   +1 more source

关于我国农田水利节水灌溉工程的设计方面的思考

open access: yes水电水利, 2020
新时期下,我国农村经济的发展水平越来越高,高效的节水技术也逐渐被应用到了农田水利节水灌溉工程中,在很大程度上也促进了我国农田水利的节水发展。文章就我国农田水利节水灌溉工程的设计工作现状以及强化措施方面进行了分析。
云爽 郭
semanticscholar   +1 more source

不同减量氮肥配施紫云英对田面水氮磷流失及水稻生长的影响

open access: yesShuitu Baochi Xuebao, 2022
为指导水稻田合理施肥,防治稻田面源污染,试验开展了不同氮肥减施比例对紫云英—水稻轮作体系下稻田田面水氮磷流失的影响研究。2020年在浙江建德开展田间小区试验,设置冬闲(CK)和冬种紫云英(CT)2个处理,并在冬种紫云英基础上设置4个减氮比例,分别为0(CT0),10%(CT1),20%(CT2),30%(CT3),共5个处理,每个处理重复3次。在水稻移栽施肥后开始稻田田面水样品采集(包括施肥2周内的连续采样以及2周后相隔7,14,28天的间隔采样),测定田面水氮磷浓度;于水稻成熟后采集土壤和植物样品 ...
吕永强   +5 more
doaj  

Overreliance on Orthographic Similarity in L2‐Japanese Conceptual Processing by L1‐Chinese Learners

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT Orthographic and phonological similarities between first (L1) and second (L2) languages can facilitate L2 processing. Particularly, L1‐Chinese learners of L2‐Japanese can benefit from the shared morphosyllabic Chinese characters (Japanese kanji/Chinese hanzi) because of their similar orthographies.
Xuehan Zhao, Kexin Xiong, Sachiko Kiyama
wiley   +1 more source

Is the Asian Openbill Migratory? Population Status and Habitat Use in Eastern Nepal 钳嘴鹳是否迁徙?尼泊尔东部地区的种群现状与栖息地利用

open access: yesWildlife Letters, Volume 3, Issue 3, Page 109-117, September 2025.
We found that the Asian Openbill primarily roosted near waterbodies and frequently used farmland habitats, with significantly higher populations observed during the breeding season. Farmland and wetland areas exhibited a positive effect on the species' habitat use.
Ganesh Tamang   +3 more
wiley   +1 more source

Servicesheds connect people to the landscapes upon which they depend

open access: yesPeople and Nature, Volume 7, Issue 1, Page 112-126, January 2025.
Abstract Ecosystem services (ES) are benefits people receive from nature. To sustain these benefits, we need to spatially connect communities benefitting from specific ES with landscape features that generate the ES. A variety of process‐based models support ES assessments by estimating the biophysical supply of ES that comes from landscapes.
Yiyi Zhang   +7 more
wiley   +1 more source

Eyes on nature: Embedded vision cameras for terrestrial biodiversity monitoring

open access: yesMethods in Ecology and Evolution, Volume 15, Issue 12, Page 2262-2275, December 2024.
Abstract We need comprehensive information to manage and protect biodiversity in the face of global environmental challenges, and artificial intelligence is required to generate that information from vast amounts of biodiversity data. Currently, vision‐based monitoring methods are heterogenous; they poorly cover spatial and temporal dimensions, overly ...
Kevin F. A. Darras   +11 more
wiley   +1 more source

人工降雨对稻田中氮磷动态变化的影响研究

open access: yesShuitu Baochi Xuebao, 2011
在水稻黄熟期,通过对微区模拟稻田进行人工降雨试验,分析了60,48,17.4 mm/h 3个雨强处理(分别表示为y-b、y-m、y-s)条件下,不同滞水时间的田面水中氮磷的动态特征以及总氮、总磷的流失潜能,研究了不同雨强和滞水时间对稻田氮磷的减排效能。结果表明:(1)在3个雨强处理下,田面水中TN浓度在人工降雨后1 h为最高,y-s的田面水中TN浓度下降迅速;y-m和y-b的田面水积聚量较大,但在第5 d时其TN浓度也迅速下降到最低值。田面水中NH+4-N浓度整体水平较低,NO-3-N浓度总体水平较高 ...
冯国禄, 龚军慧
doaj  

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