Results 41 to 50 of about 17,198 (223)
Gradient distributions of nitrogen and organic carbon in the soils from inland to tidal flat in the Yellow River Delta [PDF]
黄河三角洲是我国典型的通过黄河冲积泥沙填海造陆形成的近代沉积区。区域受到黄河冲积、沉积等自然过程和农业耕种熟化等人类活动的双重影响。本研究通过在黄河三角洲地区内陆到河口海湾不同距离采集典型土壤类型剖面发生层样品,探讨土壤有机碳、总氮等生源要素的空间分布规律,为阐明我国典型海岸带地区陆源碳、氮的输送及循环特征提供基础依据。研究结果表明,黄河三角洲内陆与河口地区呈现出完全不同的土壤碳、氮分布规律。表层土壤碳、氮含量在黄河沿岸及三角洲南部均表现出由陆向海逐级递减的空间分布特征 ...
李远+4 more
core +1 more source
高度重视湿地科学研究中国科学院副院长陈宜瑜全球第一个“世界湿地日”刚刚宣布(2月2日)又传来了在《野生动物》杂志开辟“湿地专栏”的消息,这是我国湿地事业的又一喜讯。在此,我代表中国科学院向贵刊表示衷心的祝贺。湿地是地球上具有多种功能的独特生态系统,不...
陈宜瑜
doaj
Abstract Eradicating invasive predators from islands can result in substantial recovery of seabirds, but the mechanisms that drive population changes remain poorly understood. Meta‐analyses have recently revealed that immigration is surprisingly important to the recovery of philopatric seabirds, but it is not known whether dispersal and philopatry ...
Jeremy P. Bird+2 more
wiley +1 more source
湿地国际-中国办事处项目组水鸟专家于2009年8月21~22日对浙江杭州湾湿地中心项目区及其邻近湿地的水鸟进行了全面调查。本次调查,采用定点观测与路线调查相结合的方法,共统计到水鸟7科46种,数量超过1万只,其中迁徙的鸻鹬类为26种。描述了杭州湾湿地中心迁徙水鸟的种类、数量分布及其重要性。为全面评估和了解杭州湾湿地中心的水鸟资源,为杭州湾湿地中心正在建设的野生动物湿地管理提供本底数据和依据。并对将来改善杭州湾湿地中心迁徙水鸟的保护提出了建议。
吕咏, 殷世雨, John Howes, 朱冰润
doaj
Influence of microclimate and forest management on bat species faced with global change
Abstract Climate refugia, areas where climate is expected to remain relatively stable, can offer a near‐term safe haven for species sensitive to warming temperatures and drought. Understanding the influence of temperature, moisture, and disturbance on sensitive species is critical during this time of rapid climate change.
Chelsea L. Andreozzi+3 more
wiley +1 more source
Influence of reclamation on tide processes in Eastern China Seas [PDF]
摘要 本研究基于区域海洋模式(RegionalOceanModelingSystem)建立了东中国海二维潮汐水动力模型。利用该模型结果讨论了渤、黄、东海的水动力特征及苏北沿岸围填海对其水动力环境的影响。最后对南黄海无潮点的移动与韩国西岸潮振幅的变化的关系进行了探讨。 水动力模型结果与中国沿岸验潮站观测数据比较显示,M2、S2、K1、O1四个主要分潮振幅和迟角的均方根误差分别为10cm和33.2°、6.2cm和34.5°、8.8cm和29.4°、6.0cm和40.6°。比较结果表明 ...
丁萍
core
随着我国城市化进程的加快,城市湿地生态系统面临着日益严峻的威胁,如何管理城市湿地生态系统,使其发挥应有的生态系统服务功能,成为城市管理者必须给予关注的问题。本文引入城市湿地管理的3R理论,强调在充分发挥城市湿地的娱乐功能基础上,争取广泛的公众支持,以开展恢复湿地自然水文特征为目标的湿地生态恢复工程;同时,积极支持对城市湿地的科学研究,以更好的指导恢复和娱乐项目的合理进行。
马一听
doaj
An assessment of future rewilding potential in the United Kingdom
Abstract Restoring ecosystems is an imperative for addressing biodiversity loss and climate change, and achieving the targets of the Kunming–Montreal Global Biodiversity Framework. One form of restoration, rewilding, may have particular promise but may also be precluded by requirements for other forms of land use now or in the future.
C. Brown, R. Prestele, M. Rounsevell
wiley +1 more source
湿地国际介绍陈克林,孟宪民(湿地国际中国项目办事处北京1ll714)湿地是具有多种功能的独特生态系统,是自然界最富生物多样性和最高生产力的生态景观之一。湿地具有蓄洪防旱,调节江河径流,控制水土流失,促淤造陆的功能。湿地是天然的蓄水库,可以调节气候,补...
陈克林, 孟宪民
doaj
Dutch landscapes have lost insect‐pollinated plants over the past 87 years
This study implies that Dutch landscapes are losing insect‐pollinated plant species, which is likely due, at least in part, to the decline in pollination services. Our results of quantifying the decline in insect‐pollinated plants support the necessity and urgency of taking conservation initiatives.
Kaixuan Pan+3 more
wiley +1 more source