Results 41 to 50 of about 9,074 (222)
Conservation Biology, EarlyView.Abstract In the western United States, conservation practitioners are increasingly working with private landowners to restore habitat for North American beavers (Castor canadensis) and to use nonlethal mitigation techniques when beavers damage crops and infrastructure.
Brian D. Erickson, Megan S. Jones
wiley +1 more source
, 2005 曹扬环浜是一条环形封闭水道,水质低于地表水V类标准,水体处于严重超富营养化水平,全浜暴发蓝藻水华现象。在采用截污、造流、生态恢复等生态工程措施综合治理后,随着健康水生态系统的建立,河浜水质逐步变好(由劣V类改善为接近Ⅲ类标准),水体透明见底,沉水植物覆盖率达70%~90%,水体一直维持“清水草型稳态”。重点介绍了河道治理中采用的生态修复措施及其作用,并从截污、营养盐、水生生物等方面分析了各项工程措施对抑制藻类生长、水质改善的影响 ...
方涛,王春树,陈洪达,李敦海,刘永定
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Evaluation of Eco-environmental Vulnerability of Pearl River Delta Based on PSR Model [PDF]
, 2022 [Objective] The spatio-temporal evolution characteristics and its reasons of eco-environmental vulnerability in the Pearl River delta were studied in order to provide theoretical basis for regional development.
Ma Wei, Wang Yonghong, Zheng Huiling
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Conservation Biology, EarlyView.Abstract Human development is a driver of global change and a major threat to biodiversity. Protected areas maintain and support biodiversity, but outside stressors, such as climate change and land use change, can negatively influence natural resources within protected areas.
Leah J. Rudge +2 more
wiley +1 more source
Shuitu Baochi Xuebao, 2020 选择黄河口生态恢复前后的未恢复区（R0）、2007年恢复区（R2007）和2002年恢复区（R2002）的芦苇湿地为研究对象，探讨了生态恢复工程对生长季湿地土壤无机硫形态变化的影响。结果表明，生态恢复工程不同程度地改变了湿地土壤中各形态无机硫含量。相对于R0，R2002和R2007土壤中的水溶性硫（H2O—S）含量分别降低46.7%和44.7%，吸附性硫（Adsorbed—S）和盐酸可溶性硫（HCl—Soluble—S）含量分别增加0.4%，116.0%和50.1%，29.1%，而盐酸挥发性硫（HCl ...
武慧慧 +3 more
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, 2012 沉积物疏浚是削减富营养化湖泊内源负荷的最为直接和有效的手段。分析了沉积物疏浚的效果和可能引起的风险;从外源污染、作业区域和深度、沉水植物3个方面探讨了影响沉积物疏浚效果的关键因素。最后指出,富营养化湖泊沉积物疏浚的重要原则是截断外源污染、划分作业区域、合理控制挖掘深度、创造适宜生境、恢复沉水植物 ...
刘华丽 +3 more
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Advancing conservation breeding programs for marine invertebrates
Conservation Biology, EarlyView.Abstract In the face of ecosystem change and biodiversity loss caused by climate change and other stressors, conservation breeding, or captive breeding, with the aim of reintroduction for wild population recovery, is an emerging tool for preventing species’ extinction and rehabilitating ecosystems.
Elora H. López‐Nandam +3 more
wiley +1 more source
Mangrove restoration by water quality improvement: A case of Dongzhaigang Bay, Hainan, China [PDF]
, 2016 受自然和人为活动的威胁，全球红树林严重退化，不仅红树林面积锐减，而且红树植物群落退化、生态功能受损。近几十年来红树林恢复得到广泛关注，世界各地开展了广泛的红树林恢复活动。人工造林是最常用的红树林恢复手段，但不适宜的造林不能有效地恢复红树林，而且中国红树林的宜林地面积有限，除人工造林外，还应该考虑其他手段。本研究以东寨港红树林为例，探讨不通过造林的红树林生态恢复措施。 2008年以来，东寨港红树林由于水产养殖和禽畜养殖的污染而严重退化。为改善东寨港的环境状况，2012年以来 ...
米雪芳
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Conservation Biology, EarlyView.Abstract Knowledge of species distributions is essential for informing policies on nature conservation and restoration. However, updating them on a regular basis and doing so in a harmonized manner at the international level is difficult. The European Bird Census Council integrated national monitoring data covering 5 years to update farmland bird ...
Sergi Herrando +54 more
wiley +1 more source
Shuitu Baochi Xuebao, 2020 以喀斯特高原峡谷区典型石灰土草地、退耕还草、林草间作等不同生态恢复模式为研究对象，分层采集整个剖面土壤，采用改进的BCR提取方法，通过冗余分析（RDA）等方法分析不同生态恢复模式下土壤钙的形态特征及其影响因素。研究表明：在不同生态恢复状态下，林草间作地土壤全钙、水溶态钙和酸溶态钙质量分数最高，草地土壤交换态钙质量分数最高；有机态钙含量在不同生态恢复模式土壤中没有显著差异；钙形态占全钙比均存在交换态 > 酸溶态 > 有机态 > 水溶态含量的顺序。在垂直方向，耕地和退耕还草地土壤全钙及有效钙 ...
陈青松 +3 more
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