Results 31 to 40 of about 261,427 (159)
Integrative Conservation, Volume 5, Issue 3, Page 293-305, September 2026.Through systematic price collection and correction for underreporting and undetected seizures, the global illegal wildlife trade (IWT) is estimated at US$28.4–39.5 billion per year. This finding highlights that previous valuations were underestimates.
Jia Hao Tow, L. Roman Carrasco
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Ten rules for using evidence to guide ecosystem restoration
Journal of Applied Ecology, Volume 63, Issue 9, September 2026.These 10 rules provide a guidance framework to put into action the best available evidence, ensuring that restoration benefits people and nature. We highlight the importance of knowledge brokering systems in this process, effectively informed and empowered to fulfil their emerging role across existing institutions and new ones dedicated to Science ...
Rafael B. Chaves +12 more
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, 2002 网络经济大潮下的网络公司到底价值几何？这是评估领域新的课题与难点。由于网络经济的历史较短，目前对网络公司价值评估尚没有公认的有效的方法。本文主要针对网络内容服务公司与电子商务公司这两类网络公司的价值评估进行探讨。 本文共分六个部分： 第一部分 分析网络经济的发展状况和网络经济的价值源泉。 第二部分 回顾了网络公司及其价值评估的发展阶段，并通过Amazon.com与Barnes&Noble两家公司的对比介绍网络公司优势与发展的特点。 第三部分 介绍网络公司价值评估的特点与原则 ...
陈松劲
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Intangible drivers of tolerance shape human–elephant coexistence in Southwest China
People and Nature, Volume 8, Issue 8, Page 2763-2780, August 2026.Abstract Southwest China is home to a small but rapidly expanding population of Asian elephants (Elephas maximus), whose growth has intensified conflicts with people living in shared landscapes. These conflicts result in substantial economic losses and occasional human casualties. This coexistence paradox—where conservation success leads to significant
Xiaoyu Yu +4 more
wiley +1 more source
Shuitu Baochi Xuebao, 2003 森林涵养蓄水价值量核算方法较多,包括土壤蓄水估算法、水量平衡核算法、多因子回归法和用地下径流增长法计算森林涵养水源的价值。但此方法存在一个问题,需要分别求出森林涵养水源的价值,然后进行合成。在合成过程中,可能存在信息叠加等问题,使计算结果偏离实际,为此提出了森林涵养水源价值量核算模糊数学模型,V=(A○R).S,A为要素评价的权重值,R为影响森林涵养水源单要素评判矩阵所组成的综合评价矩阵,S为水资源价格向量,S=(P,P1,P2,P3,0)。
姜文来
doaj
Ultrasound in Obstetrics &Gynecology, Volume 68, Issue 2, Page 256-269, August 2026.ABSTRACT Objectives The primary aims of this study were to validate externally the diagnostic performance of the Assessment of Different NEoplasias in the adneXa (ADNEX) model for distinguishing between malignant and benign adnexal masses, when used by non‐expert ultrasound examiners in general gynecological settings with a low prevalence of ovarian ...
I. M. Dueholm Hjorth +11 more
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, 2008 近50年来,旅游地游憩价值评估成为一个热点研究领域,为相关自然保护区、景区的管理与决策起到重大作用。我国从20世纪80年代也出现了游憩价值评估的探索。综合分析国外的相关资料,旅游地游憩价值评估主要集中于旅游地环境资源总经济价值评估、生态旅游发展与政策评估、游憩项目评估和评估方法的研究,主要使用费用支出法、旅行费用法和条件估值法等方面。我国的游憩价值评估主要集中在森林游憩价值领域,方法应用和研究规范上与国外尚有差距。此外,针对我国部分研究将出现将游憩价值评估与经营资产价值评估糅合 ...
刘爱利, 陈田, 刘敏
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Conservation Biology, Volume 40, Issue 4, August 2026.Abstract Constructed value of information (CVoI) is an expert elicitation decision‐analytic tool used to prioritize sources of uncertainty based on their potential to improve decision outcomes if resolved. Despite increased application of CVoI, the robustness of CVoI prioritization of sources of uncertainty relative to differences in expert elicitation
Kristin P. Davis +7 more
wiley +1 more source
Conservation Biology, Volume 40, Issue 4, August 2026.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
wiley +1 more source
, 2008 在综合分析国内外生态系统服务功能分类和估价研究基础上,对价值评估方法进行了汇总.目前对生态系统服务进行估价的方法可概括为4大类:实际市场评估技术、替代市场评估技术、模拟市场评估技术以及新近提出的空间-能值分析技术.由于生态系统服务本身的复杂性和交叉性,不同研究人员采用不同的研究方法得出的评价结果间对比性很低,缺少一个统一、规范 ...
周可法, 孙莉, 秦艳芳
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