Results 11 to 20 of about 19,361 (106)
Shuitu Baochi Xuebao, 2007 通过探讨流域生态环境需水量概念及分析方法,概算了石羊河流域河流基础生态环境需水量、河流输沙需水量、流域湖泊湿地生态环境需水量和下游地下水合理补给需水量。结果表明:石羊河流域河流系统基础生态环境需水量为2.458 6×108m3,约占流域地表水资源来水量的16.93%;输沙需水量为5.30×108m3;流域湖泊湿地需水量为1.53×108m3,下游地下水补给需水量为1.758 6×108m3。生态环境需水量整合后,适宜的生态需水量约占水资源总量的36.49%~48.60%。
宋明伟 +3 more
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Shuitu Baochi Xuebao, 2005 生态环境需水量是当前水资源管理等学科研究的重点和难点。对于河流生态环境需水量已形成比较系统的理论和计算方法,但对于其它生态系统则没有固定的计算模式,生态需水量项目也因具体环境而异。依据黄河三角洲自然保护区生态系统特点,其需水量项目主要有植物需水量、湿地蒸散量、土壤需水量、野生生物栖息地需水量、补给地下水需水量和防止岸线侵蚀及河口生态环境需水量等。遥感技术在区域资源环境研究方面具有极大优越性,本文利用遥感技术重点对黄河三角洲湿地生态系统需水量中的蒸散量进行了计算,其它需水量项目则用一般方法进行了计算 ...
张长春 王光谦 魏加华
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Shuitu Baochi Xuebao, 2005 湿地生态用水是湿地为维持自身发展过程、保证基本生态功能发挥所需要的水量,作为一种特殊的生态系统类型,湿地的生态用水计算比其他生态系统复杂,其中包括湿地植被需水量、满足蒸发需水量、湿地土壤需水量、湿地动物需水量、野生生物栖息地需水量以及景观建设需水量等等。本文介绍了用水量平衡法计算湿地生态系统需水的方法,并分别探讨了湿地中植被、土壤、生物栖息地等诸项生态需水量的计算方法。用这些方法对乌梁素海湿地的生态用水量进行了具体探索。乌梁素海湿地包括内蒙古自治区的第二大淡水湖———乌梁素海及其周围的沼泽地 ...
崔丽娟 鲍达明 肖红 雷昆
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Wildlife Letters, EarlyView.Using radiotelemetry, we found that the movement and home range of the endangered Sacalia bealei varied significantly across reproductive classes and seasons, with males exhibiting greater movement than females during wet and mating seasons. The species exhibits strong aquatic dependence, favoring deep pools interspaced among riffle‐pool sequences ...
Wing Sing Chan +3 more
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Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop +8 more
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Shuitu Baochi Xuebao, 2002 对生态需水量研究进行了综述,阐明了生态需水量研究的意义,并对生态需水量研究的国内外现状进行了综合评述,在此基础上,指出今后生态需水量的研究方向。
王玉敏 周孝德
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Conservation Biology, EarlyView.Abstract The design of experiments to investigate the combined effects of multiple stressors requires exposing target organisms to multiple combinations of stressor doses. Concurrent manipulation of stressors is often infeasible with wildlife, but long‐lasting health effects allow individual health to be used as an integrator of prior stressor exposure.
Enrico Pirotta +24 more
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Structured machine learning modeling to support conservation of deep‐sea benthic biodiversity
Conservation Biology, EarlyView.Abstract Biodiversity monitoring programs need to deliver accurate, timely, and actionable predictions. To establish a predictive monitoring program for deep‐sea benthos of the Santos Basin, Brazil, we developed a two‐stage structured model that allowed comparison of biodiversity predictions obtained from environmental simulations (2M‐Sim).
Gustavo Fonseca +23 more
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Conservation Biology, EarlyView.Abstract Although significant biodiversity has been safeguarded by protected areas (PAs), biodiversity trends continue downward. Within the frameworks of the EU Biodiversity Strategy for 2030 and the new EU Restoration Regulation (2024), conserving critical biodiversity areas is essential.
George Kefalas +14 more
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Shuitu Baochi Xuebao, 2023 为提高黄淮海平原夏玉米的灌溉效率,优化农业资源配置,依据黄淮海平原27个站点70年的试验统计资料,在作物需水量模型、降雨频率分析、作物系数相关理论的基础上,分析不同水文年型夏玉米的需水量和缺水量(即需要补充灌溉的水量)的时空分布。首先,根据各代表点的多年降雨资料,利用皮尔逊—Ⅲ型曲线确定降雨频率分别为25%,50%,75%,95%的4种水文年型及其相应的有效降雨量;其次,利用Penman-Monteith模型计算参考作物需水量,并结合作物系数法估算作物需水量,进而求得在4种水文年型下夏玉米的需水量 ...
刘栩辰 +6 more
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