Results 11 to 20 of about 211,057 (162)
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
doaj +2 more sources
Conservation Biology, EarlyView.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
Shuitu Baochi Xuebao, 2004 在研究济南市南部山区森林涵养水源功能的基础上,利用替代工程法对森林的涵养水源总量进行了价值评价。研究结果表明,该地区林地枯落物层的蓄水价值为57.83万元,林地土壤层的蓄水价值为5938.74万元,林地土壤增加枯水期水量的价值为4463.02万元,森林净化水质的价值为8950.10万元,森林涵养水源的总价值为19409.69万元。研究为该区森林涵养水源功能的经济价值评估提供了科学的理论依据,对济南市的生态环境建设有着积极的指导作用。
李红云 杨吉华 夏江宝 吕爱霞 鲍玉海
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Zhongguo shiyan zhenduanxue, 2021 目的探讨血栓弹力图对脓毒症诱发凝血病(SIC)的诊断及预后评估作用。方法连续收集2018年12月至2020年9月中国康复研究中心急诊科收治的脓毒症患者150例,根据SIC评分系统将患者分为SIC组(64例)和非SIC(86例)组,根据SIC患者的预后分为存活组(21例)和死亡组(43例),分别比较两组间血栓弹力图R值、K值、α角、MA值及CI值,采用受试者工作特征(ROC)曲线评价血栓弹力图各指标对SIC的诊断及预后评估的临床价值。结果与非SIC组相比,SIC组R值、K值显著延长,α角 ...
李俊玉 +6 more
doaj
Conservation Biology, EarlyView.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
, 2001 企业经营追求价值最大化 ,价值评估对企业改进管理、提升价值有重要意义。较通行的两种评估模型是 :现金流量折现模型和经济利润模型 ,各有比较优势。企业价值评估必须通过对企业历史绩效进行分析 ,预测绩效 ,估计资金成本 ,进行连续价值预测 ...
沈维涛
core
Informal supply chains of wild meat from rural Amazonia and food security in an urban center
Conservation Biology, EarlyView.Abstract Iquitos, the most populated city in the Peruvian Amazon, is a hub in the regional supply chain of wild meat and supplies urban consumers. Studies on wild meat consumption have focused primarily on markets, limiting the scope of species considered to those that are economically valuable and potential inferences from those data.
Fiorella Briceño Huerta +3 more
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2023 目的探讨磁共振表观弥散系数（ADC）评估磁共振引导聚焦超声术（MRgFUS）治疗子宫肌瘤效果的价值。方法回顾性分析佛山市中医院2018年1月至2022年10月期间56例接受MRgFUS治疗子宫肌瘤患者治疗前、治疗3月后和6月后的MRI及临床资料，比较患者病灶ADC值与肌瘤的体积，症状严重评分（SSS）和子宫肌瘤症状-生活质量问卷（UFS-QOL）评分的相关性。使用方差分析比较治疗前后相关数据的差异，采用Pearson法进行数据的相关性分析。结果56例患者治疗前及治疗3个月后、6个月后病灶ADC值［（1 ...
曾雪伟 +6 more
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Assessing and strengthening community‐based coastal governance
Conservation Biology, EarlyView.Abstract Community‐based coastal governance is essential for biodiversity conservation and sustainable livelihoods, yet many communities continue to face significant challenges in establishing and sustaining effective governance systems. We sought to improve understanding of the current status of community‐based coastal governance across five countries
Mark Andrachuk +21 more
wiley +1 more source
Modeling seed germination data to meet biodiversity conservation needs in the Mediterranean
Conservation Biology, EarlyView.Workflow to assess the availability and quality of germination data and assign species' thermal risk in the Mediterranean. (a) Assessment of data availability, including the phylogenetic distribution of the number of records (i.e. available germination data); (b) data quality assessment; and (c) assignment of climate risk categories for species that ...
Diana María Cruz‐Tejada +2 more
wiley +1 more source