Results 1 to 10 of about 20,096 (100)
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
doaj +2 more sources
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
doaj +2 more sources
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
doaj +2 more sources
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
wiley +1 more source
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
doaj +2 more sources
Wildlife Letters, EarlyView.The study explores how beavers (Castor spp.) affect endangered freshwater pearl mussels (Margaritifera margaritifera) in European rivers. Beaver dams can harm small, fragmented mussel populations by reducing flow, increasing sediment, and potentially limiting host fish movement, while larger populations may benefit from improved bed stability and ...
Louise Lavictoire +2 more
wiley +1 more source
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
doaj
Emerging applications of large language models in ecology and conservation science
Conservation Biology, EarlyView.Abstract Large language models (LLMs) mark a major development in artificial intelligence, with potentially transformative implications for ecology and conservation science. Built on advanced deep‐learning architectures, these models can support a wide range of tasks. We reviewed emerging applications of LLMs, drawing on the wider scientific literature
Christos Mammides +5 more
wiley +1 more source
Habitat and spatial trends of U.K. wintering waterbird populations over 50 years
Conservation Biology, EarlyView.Abstract The United Kingdom is an important wintering ground for millions of waterbirds. Most U.K. wintering waterbird populations increased between 1970 and the mid‐1990s, but declined thereafter. We examined U.K. population indices in 46 wintering waterbird species in two 25‐year periods, 1970–1994 and 1995–2019, to identify which waterbird groups ...
Blaise Martay +8 more
wiley +1 more source
Behavioral interventions to reduce demand for threatened freshwater turtles as pets
Conservation Biology, EarlyView.Abstract Growing demand for freshwater turtles as pets has fueled illegal trade and accelerated wild population declines, underscoring the need for theory‐based demand‐reduction interventions. We conducted a three‐part randomized controlled trial with active turtle keepers (n = 1800) in China to test conservation‐ and legality‐framed messages by ...
Wuji Zheng +9 more
wiley +1 more source