Results 21 to 30 of about 3,497 (164)
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Organic phosphorus mineralization is a critical process in the phosphorus cycle, governing phosphorus bioavailability for plants. The PhoD gene, which encodes the key enzyme alkaline phosphatase, serves as a valuable biomarker for this process.
Sandhya Mishra +3 more
wiley +1 more source
Conservation Biology, EarlyView.Abstract Consumer demand for ivory perpetuates the unsustainable and illegal killing of African elephants and other wildlife species. Interventions that aim to change consumer behavior are increasingly recognized as a crucial element of demand management. However, poor design and implementation have limited their effectiveness.
Molly R. C. Brown +2 more
wiley +1 more source
Research on Offshore Outsourcing Supplier Evaluation for X Company [PDF]
, 2016 供应商的评价对于外包采购企业的发展来说是重中之重。从直接驱动因素看，可以扩大经营范围，降低企业成本；从间接驱动因素看，可以提高运作效率，实现战略整合。从而在供应链管理环节与竞争对手拉开距离，形成自己的竞争优势。X公司是一家总部在英国的航空用品供应商，主要为中国大陆地区以外的航空公司提供机舱内各种一次性或者可循环使用的轻工产品，而这些轻工产品绝大部分是由X公司厦门独资分公司通过其亚太地区供应商获取。论文以X公司目前开发中国离岸外包供应商中存在的问题入手，全面深入地分析了其产生的原因 ...
陈文
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, 2018 利用广州碳排放权交易所2016—2018年的交易数据,首次引入电力变量,建立自回归分布滞后模型对碳排放权价格需求方面的驱动因素与碳价格的动态因果效应进行实证分析。研究结果表明:驱动因素影响的显著性及方向与试点地区的能源结构和经济发展水平相关。具体到广东,天然气和原油价格、工业生产、极端天气事件与碳价格显著正相关,煤炭价格、代表燃气电厂单位利润的清洁点火差价与碳价格显著负相关;股票市场指数、代表燃煤电厂单位利润的清洁黑暗差价、代表电厂单位减排成本的转换价格对碳价格均无显著影响。同时 ...
杨德天, 王丹舟
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Distribution, scale, and drivers of mass mortality events in Europe's freshwater bivalves
Conservation Biology, EarlyView.Abstract Mass mortality events (MMEs) are decimating populations and compromising key ecosystem functions around the globe. One taxon particularly vulnerable to MMEs is freshwater bivalve mollusks. This group has important ecosystem engineering capacities and includes highly threatened and highly invasive taxa.
Daniel A. Cossey +39 more
wiley +1 more source
水土保持措施驱动村域土地利用景观格局变化——以米脂县高西沟村为例
Shuitu Baochi Xuebao, 2023 以陕北地区典型乡村——榆林市米脂县高西沟村为例,探究其在水土保持措施下土地利用景观格局变化及驱动因素,对黄土丘陵区水土保持、景观格局优化、美丽乡村建设和生态可持续发展具有指导意义。基于高西沟1986年、2004年、2022年遥感影像,借助ArcGIS、ERDAS和FRAGSTATS等软件,运用动态度、转移矩阵、景观格局指数对土地利用变化进行分析,并对其驱动因素展开探讨。结果表明:(1)林地和草地是高西沟的主导地类,约占区域总面积的80%,耕地、未利用地呈减少趋势,水域和建设用地无较大变化 ...
涂雯, 吴静雯, 马理辉, 冯喆
doaj
The Study of China’s Choices of Climate Policies and ItsTrade, Environmental Effects in the Post-Kyoto Era [PDF]
, 2016 全球气候变化问题是人类迄今为止面临的规模最大、范围最广、影响最为深远的挑战之一。世界各国在加强气候变化科学研究的同时也在不断探索应对气候变化的方法和路径。《京都议定书》明确规定了主要工业化国家的定量减排目标和时间表，发展中国家则不受约束。然而，《京都议定书》已于2012年结束第一期承诺，而后国际气候谈判将去向如何？议定书生效后的缔约方会议中发达国家多次力推“后京都进程”，迫使中国等发展中大国承担减排义务。2015年12月签订的《巴黎协定》明确了发达国家应继续领头完成减排目标 ...
韦韬
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Spatio-temporal Differentiation and Driving Factors of Farmland Ecosystem Carbon Source-Sink Effects in Guangdong Province [PDF]
, 2023 [Objective] The spatio-temporal differentiation and driving factors of farmland ecosystem carbon source-sink effects in Guangdong Province were analyzed in order to provide a valuable reference for the scientific and rational formulation of regional ...
Bin Jinyou, Tang Xiaobing
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Conservation Biology, EarlyView.Abstract Despite the crucial role of human impacts on biodiversity loss, many assessments of this loss focus on single metrics, such as species richness, and overlook the multidimensional effects of human activities. Because of its importance to ecosystem functioning, we investigated the functional diversity of medium‐ and large‐sized mammal ...
Xueyou Li +8 more
wiley +1 more source
The Research of the Relation of Government and Market in China Under the New Normal ——An Example of the Special Car Regulation of China's Local Governments [PDF]
, 2016 政府与市场的关系一直是市场经济发展和政府改革的重要议题之一，它们作为两种基本资源配置方式，影响着经济社会发展的进程以及资源配置的效率，其关系问题在世界各国经济社会发展过程都存在，并且也是各国经济学者和政治学者，以及政府官员所聚焦的重要领域。目前中国市场定位虽然在理论层面发生转变，预示着政府与市场之间的关系也必将重塑。但在实践层面政府与市场关系的重塑还只是停留在转变的初始阶段，且这过程中必然会面临许多政府与市场的关系问题。加之中国经济正在经历新常态阶段 ...
覃维彬
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