Results 21 to 30 of about 984,647 (187)
水电水利, 2019 中国水利工程既可以发挥积极作用,同时会对区域原有的生态环境造成一定负面影响。需要正确认识水利工程建设对生态环境的影响,为保障人类与自然可以和谐相处,需要采取有效措施促进水利工程建设与生态环境的协调发展,本文主要研究水利工程建设对生态环境造成的影响,同时提出合理化解决措施。
亭洁 安
semanticscholar +1 more source
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
wiley +1 more source
水电水利, 2019 为有效解决南阳河流域水资源匮乏、河流污染及水土严重流失问题,通过采取堆石砼重力生态坝及相关清淤、河岸护坡工程等生态修复技术,对流域进行了全范围的治理工作。结果表明：(1)采取堆石砼重力生态坝及相关清淤、河岸护坡工程等生态修复技术对流域水生态修复起到了良好的治理效果；(2)基于层次分析理论构建多层次、多指标评价体系,计算得出各指标权重因子；进一步引入综合评价指数对治理后河流生态及效益进行定量分析,得出修复后河流综合评分为3.23分,属很好范畴。
承遗 赵
semanticscholar +1 more source
Scientists’ warning on the global destruction of rock outcrop ecosystems
Conservation Biology, EarlyView.Abstract Rock outcrops are geological formations that harbor a highly specialized biota adapted to harsh environmental conditions that differ from their surrounding landscapes. They are globally distributed, especially in old, highly weathered landscapes, and can function as habitat islands containing high levels of endemism and distinct evolutionary ...
Luiza F. A. de Paula +19 more
wiley +1 more source
Gongye shui chuli, 2023 采出水回注是国内处理气田采出水的有效手段，但是，由于不同工艺处理效果存在差异，导致采出水中未被处理的部分悬浮物对回注地层造成不同程度的堵塞伤害。运用激光粒度衍射分析技术、室内物理流动模拟实验结合核磁共振技术，开展采出水回注室内模拟实验，定量评价采出水悬浮物对岩心样品的伤害程度，明确不同工艺处理效果，揭示回注地层堵塞伤害机理。实验结果表明，气田采出水悬浮物粒径尺度是影响回注地层堵塞程度的主控因素，发生堵塞伤害的悬浮物粒径主要分布在7.65~52.62 μm；采用“破乳+油水分离+沉降除油+气浮+旋流分离 ...
杜康 +6 more
doaj
水电水利, 2019 宁陵县农村饮水安全工程供水厂和县城自来水厂的水源均为深层地下水,通过对深层地下水持续大量开采造成地下水位持续下降的原因进行分析,并指出了由此可能产生的地面下沉、水质恶化以及地下水资源枯竭等严重后果,同时提出了相应的防治地下水水位持续下降的对策。
忠钦 王
semanticscholar +1 more source
Effects of restoration practices on biodiversity in temperate and boreal forests
Conservation Biology, EarlyView.Abstract Several restoration practices are used to mitigate and compensate for the negative effects of large‐scale forestry on biodiversity in temperate and boreal forests. A comprehensive synthesis of the benefits of these practices across taxa is missing. We conducted a systematic review and meta‐analysis on this topic.
Malin Tälle +2 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
Gongye shui chuli, 2000 总结了油田采出水的特性及现场采用的水处理工艺流程,比较不同处理方法的适用范围及优缺点。指出目前油田现场采出水处理存在的问题,特别是对大庆油田聚合物驱和三元复合驱采出水进行了深入分析,阐明了污水处理难度大的原因是聚合物增加污水粘度,表面活性剂使污水严重乳化,并指出处理该污水的有效途径。
邓述波 +6 more
doaj
Gongye shui chuli, 2021 采用电絮凝技术去除超稠油高温采出水中的有机物和悬浮物，研究极板面积、电流强度和电压、进水pH、水温对处理效果的影响。结果表明，去除有机物尤其是石油类时，应增大极板面积，提高反应电流，保持反应温度，并在pH中性条件下运行。去除悬浮物，应后置固液分离单元强化絮体去除。电絮凝法能有效去除超稠油高温采出水中的有机物，且不需额外加入药剂，不会恶化循环利用采出水的水质。
白昱 +7 more
doaj