Results 41 to 50 of about 8,540 (163)
Shuitu Baochi Xuebao, 2003 通过研究比较不同植被类型下土壤中微生物区系、土壤酶活性和土壤生化作用强度,分析了贵州高原喀斯特环境退化演变过程中土壤质量的生物学特性变化过程。结果表明:随喀斯特环境退化程度加剧,土壤微生物总数下降,各主要生理类群数量呈下降趋势,土壤酶活性减弱,土壤生化作用强度降低,对环境反应敏感,可作为反映土壤质量的生物学指标。土壤微生物和酶活性是表征喀斯特环境退化演替过程中土壤质量的重要特征之一。
龙健 李娟 滕应 黄昌勇
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国外生态城市近十年研究回顾——基于Citespace软件的可视化分析 [PDF]
, 2018 低碳生态转型已成为目前我国城市发展的关键,以生态城市建设落实可持续发展也成为引导城市发展的重要手段。文章回顾了国际生态城市研究的发展历程,从文献时间及领域分布、代表人物及文章、研究前沿、研究趋势和主要研究内容5方面入手,将web of science核心数据库中2008~2017年近10年间关于生态城市的相关研究论文,利用Citespace软件进行可视化分析。研究发现,国外生态城市相关研究趋于向实证及数据分析方向发展,可持续发展、绿地空间及气候应对仍是研究热点。文章系统梳理近10年在\"城市研究 ...
张若曦, 苏腾, 黄梦然
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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
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Ecosystem Health Assessment of Xinghua Bay [PDF]
, 2011 随着海岸带区域社会和经济的不断发展，海湾开发活动的强度日益提高，海湾生态系统的健康受到严重威胁，生态系统管理面临着挑战。因此，开展海湾生态系统健康评价研究，判断其健康水平，是加强海湾生态环境保护、强化海湾生态系统管理的必然要求，其研究成果可以为海洋管理工作提供科学依据。 兴化湾是福建省第一大海湾，湾内滩涂面积广大，海洋环境条件较好，长期以来为人类和其它生物提供了广阔的生存空间。当前兴化湾内资源开发活动日益增加，对海湾生态系统产生了较大干扰 ...
姜峰
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Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Stand functional diversity (RaoQ) and stand functional composition in terms of the functional traits of the component species (CWM trait) are critical for ecosystem processes and functioning, such as litter decomposition and associated nutrient cycling.
Bai‐Yu Yang +12 more
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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
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Representation of obligate groundwater‐dwelling copepod diversity in European protected areas
Conservation Biology, EarlyView.Abstract Groundwaters sustain diverse surface ecosystems and are populated by metazoan species, mostly invertebrates, that provide fundamental ecological functions and are often of prominent conservation value due to narrow endemism and high phylogenetic rarity.
Francesco Cerasoli +7 more
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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
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Shuitu Baochi Xuebao, 2023 草甘膦除草剂是农业生产中不可或缺的物资,过量使用会导致大量草甘膦及其衍生物在土壤中残留,对生态环境安全构成威胁。通过系统阐述草甘膦在环境中的迁移转化过程,以及草甘膦对土壤生物及环境质量的影响,着重分析了草甘膦对土壤蚯蚓、微生物群落的毒理效应,草甘膦与土壤其他污染物的协同效应和草甘膦驱动土壤碳氮磷生物地球循环变化。同时指出当前研究的不足,并提出下一步研究的重点:(1)加强草甘膦的降解机制和影响因素的研究,并筛选更高效降解能力的微生物菌株,提高草甘膦降解效率和修复草甘膦污染环境的能力;(2 ...
张友 +4 more
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How Do I Measure up? Social Influence and L2 Motivation in the Algorithmic Age
International Journal of Applied Linguistics, EarlyView.ABSTRACT Comparative thinking is a fundamental human drive and a hallmark of contemporary life. For social action, such as the learning and use of additional languages, a target for appraisal (an L2 attribute) is evaluated in relation to a comparison standard (an appraiser's standpoint).
Alastair Henry, Meng Liu
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