Results 131 to 140 of about 1,886,537 (208)
, 2014 本发明涉及一种由3-氮杂-1,5-烯炔衍生物制备吡啶衍生物的方法，具体地说是由3-氮杂-1,5-烯炔经两步反应脱掉亚磺酸分子制备吡啶衍生物的新方法。本发明不使用过渡金属催化剂 ...
信晓义, 万伯顺, 吴凡
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Harnessing social media data to track species range shifts
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Biodiversity monitoring programs and citizen science data remain heavily biased toward the Global North. Especially in megadiverse countries with limited biodiversity records, incorporating social media data can help address existing data gaps.
Shawan Chowdhury +15 more
wiley +1 more source
, 2014 本发明涉及一种生物裂解油制备液体燃料的方法，以生物裂解油为底物，采用镍基固体催化剂，以甲醇和/或乙醇为溶剂和反应原料，在200-350℃温度和搅拌条件下，反应1h以上制备得到油水混合物，静置后分离除水，油相经蒸馏后得到燃料油。燃料油制备收率为10-50%（与原始裂解油的重量比值），其HHV热值（高位发热量）可达44MJ/kg，略低于普通汽油(46MJ/kg)和可再生生物柴油（45MJ/kg），高于甲醇（23MJ/kg）和乙醇（30MJ/kg）。催化剂经分离后洗涤、干燥后可以多次使用。该方法操作安全 ...
王业红, 王峰, 徐杰, 张晓辰
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Biodiversity‐driven spatial conservation planning to delineate temporally stable regions
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract The accelerating loss of biodiversity underscores the critical need for effective conservation strategies, particularly in the face of climate change and anthropogenic pressures. We devised a conservation planning framework that adopts a temporal stacking approach to species distribution models and landscape connectivity analyses. These models
Mattia Iannella +5 more
wiley +1 more source
野生动物学报, 1989 问:为什么要制定《野生动物保护法》? 答:我国是世界上野生动物种类最多的国家之一,而且还有一些是闻名世界的珍贵、濒危野生动物,这些野生动物不仅是我国人民的宝贵财富,而且也是世界人民的宝贵财富。建国三十多年来,国家在保护野生动物方面做了大最的工作,取得了一定的成绩,但是,由于国家没有专门的立法,破坏野生动物资源的情况还十分严重。因此,制定《野生动物保护法》,首先是保沪野生动物资源的需要,特别是保护、拯救珍贵、濒危野生动物的需要 ...
王洪杰, 徐军
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, 1976 本书概述了废水生物处理的方法及基本原理，阐明了废水生物处理中微型动物的生态，对166种微型动物进行了分类、形态和生态的描述，附有图及照片 ...
湖北省水生生物研究所第四研究室无脊椎动物区系组
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Scenarios and strategies for future‐proofing ecosystem management under climatic novelty
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Climate change is driving unprecedented declines in dominant, habitat‐forming foundation species across marine and terrestrial ecosystems globally. As climatic novelty becomes the norm, ecosystem reassembly will become increasingly common. Predicting and understanding these transitions, and their implications for future ecosystem functioning ...
Lauren T. Toth +14 more
wiley +1 more source
野生动物学报, 2006 野生动物不同于一般的商品,它是一种缺乏市场价格的“公共商品”。因此对野生动物价值的评估方法也不同于一般的经济学方法。本文根据国内外野生动物价值评估的研究现状,主要介绍了两种实用的野生动物价值评估方法即旅行费用法（TCM）和条件价值评估法（CVM）,并对这两种方法的优点及局限性进行了评价。
黄晨, 杨木肖, 邹红菲
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A more‐than‐human political ecology of Indonesian songbird trade
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Since its inception, conservation science has considered wildlife trade a problem. In focusing on conservation outcomes, conservationists almost completely ignore the welfare of traded animals and plants and the harms they endure. We developed a political ecology approach that incorporates the interconnectedness of people with animals and ...
Sicily Fiennes +9 more
wiley +1 more source
野生动物学报, 1989 第一章总则第一条为保护、拯救珍贵、濒危野生动物,保护、发展和合理利用野生动物资源,维护生态平衡,制定本法。第二条在中华人民共和国境内从事野生动物的保护、驯养繁殖、开发利用活动,必须遵守本法。本法规定保护的野生动物,是指珍贵、濒危的陆生、水生野生动物和有益的或者有重要经济 ...
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