Results 11 to 20 of about 8,490 (166)
Fluxes, Temporal and Spatial Variation and Influence Factors of Dissolved Nutrients in the Jiulong River Watershed [PDF]
, 2016 营养盐是水生生物生长不可或缺的化学成分。河流是连接陆地与海洋两大生态系统的重要纽带，也是营养盐输送的一个关键渠道。九龙江作为福建省第二大河流连接了福建省东南部发达地区与台湾海峡，流域内环境压力较大，但对于人类活动对九龙江流域营养盐的生物地球化学行为及其排放尚不明了。 本研究于2013年3月至2014年4月对九龙江北溪、西溪和南溪河流端进行了高频取样，并在枯水期（2013年1月19-21日）及丰水期（2013年10月25-26日）分别实施了北溪及西溪全流域内的沿程调查取样 ...
陈国祥
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Justice in coexistence: Pastoralism and large carnivores on the Qinghai‐Tibet Plateau
People and Nature, EarlyView.Abstract The conflict between livestock husbandry and large carnivore conservation presents significant challenges in grassland ecosystems worldwide. Achieving sustainable coexistence among herders, livestock and large carnivores requires reconciling diverse perspectives and interests through equitable, inclusive and fair processes that address both ...
Yufang Gao, Yue Yu
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Ecological study on plankton and water quality bioassessment of the Jiulong River Estuary [PDF]
, 2015 本文以环保公益性行业科研专项“入海河口区水质标准和水环境质量评价方法研究(NO：201309007)”2013年9月~2014年4月4个季节的调查数据为基础，对九龙江口浮游生物的种类组成、时空分布、优势种、环境影响因素等进行了研究；基于环境因素和地理水文概况进行了区域划分，探讨了不同分区浮游生物的群落结构特点并对其水质进行了生物学评价。 主要的研究成果如下： 1、九龙江口浮游植物的种类组成和数量变化 本次调查共鉴定浮游植物150种(含变种和变型)，隶属于5门63属，其中以硅藻占主导地位 ...
吴白洁
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Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop +8 more
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Anaerobic respiration and its influence on the carbonate system in estuarine sediment [PDF]
, 2015 海洋是大气CO2重要的汇。自工业革命以来，海洋吸收的人为CO2已导致表层海水中的自由氢离子浓度升高了26%，海水pH降低了0.1个单位，同时，水体溶解无机碳(DIC)和HCO3-浓度升高，CO32-浓度降低，海水碳酸盐系统对CO2的缓冲能力降低。碱度(TA)的高低是海水对pH变化起缓冲作用的重要因素，一般地说，TA越高，则海水碳酸盐系统的缓冲能力越强。 每年通过河口输入海洋的DIC大致相当于全球海洋吸收大气CO2量的20%，与同时入海的TA一起对海洋碳酸盐系统产生重要影响 ...
胡玲
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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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Studies on Environmental Physiology of coccolithophorids and diatoms [PDF]
, 2015 随着大气CO2浓度不断升高，浮游植物面临海洋酸化，温度升高，上部混合层变浅导致其在该层内受光量增加等一系列环境变化。尽管迄今的研究，对这些环境变化与浮游植物的关系，有一定认识，但争议性强的报道多，尚不能预测海洋初级生产过程的变化趋势。为此，本文以海洋中常见的颗石藻与硅藻为材料，开展了阳光辐射、海洋酸化及升温对其生理生态学特征影响的研究，同时，探讨了这些环境因子的耦合效应对两类藻种间关系的影响。主要结果如下: 1、颗石藻光合与钙化作用的关系。 降低海水钙离子浓度 ...
邢涛
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Comprehensive framework for assessing and optimizing existing research networks
Conservation Biology, EarlyView.Abstract Conservation, monitoring, and research networks, or collections of ecological research sites unified under a common mission of data collection or a research mission, are essential infrastructure for understanding large landscapes. However, most networks developed opportunistically over decades rather than through systematic design, creating ...
Alyson East +2 more
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Remote Sensing Retrieval Algorithms and Spatial-temporal Characteristics of POC in the South China Sea [PDF]
, 2015 颗粒有机碳(ParticulateOrganicCarbon,POC)是海洋生物地球化学过程的重要组成部分，随着光学技术和遥感手段的进步，在不同时空尺度下监测POC取得很大突破。本文以2011年国家自然科学基金委南海共享航次现场光学数据为基础，探索适用于南海POC反演的海色卫星遥感算法，将算法应用到卫SeaWifs遥感反射比Rrs(λ)数据，得到南海月平均POC，并分析其在季节和年际时间尺度上的时空变化特征。 首先，依据现场观测遥感反射比Rrs(λ)和POC，用多种方法来估算南海表层POC浓度 ...
张鹏
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Biodiversity‐driven spatial conservation planning to delineate temporally stable regions
Conservation Biology, EarlyView.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
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