Results 31 to 40 of about 7,923 (185)

Influence of reclamation on tide processes in Eastern China Seas [PDF]

open access: yes, 2016
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  

Effects of Native Forest Conversion on Soil Labile Organic Carbon and Enzyme Activity in Northwestern Hunan Province [PDF]

open access: yes, 2023
[Objective] The response of soil labile organic carbon components and enzyme activities to natural forest conversion was analyzed in order to provide a scientific basis for predicting regional soil health evolution and environmental change.
Li Xue   +5 more
core   +1 more source

Genomic responses to increased temperature and pollinator selection in Brassica rapa L.

open access: yesNew Phytologist, Volume 250, Issue 2, Page 1231-1247, April 2026.
Summary Rapid environmental change reshapes both abiotic stress and biotic interactions, yet it remains unclear how these combined forces structure plants' genomic adaptation. In particular, the joint influence of temperature and pollinator identity, two ecological axes undergoing simultaneous global shifts, has rarely been quantified at genomic ...
Yanqian Ding, Florian P. Schiestl
wiley   +1 more source

中国中缅树鼩生理生态学研究30年

open access: yes野生动物学报, 2023
自20世纪90年代,开始了中国中缅树鼩(Tupaia belangeri)的生理生态学研究。回顾30年来中国中缅树鼩生理生态学的研究与发展:起源和分类、能量代谢和产热特征、脂肪组织、形态学、组学、化学通讯和行为学等。在科学发展的新时期,除进一步加强有关中缅树鼩对极端环境的生理适应研究外,还需要借助多组学、遥感与红外技术等,加强对动物生理适应的分子水平的机理性探究。结合全球温室效应的环境背景,从地理分布北线、食性、肠道微生物多样性以及实验动物建模等方面对中缅树鼩未来的研究方向进行了展望。
侯东敏, 贾婷, 朱万龙, 王政昆
doaj  

Precise Tailoring of the Coordination Environment of Single‐Atom Cu(I) on Trifurcate AlL3 Supports for Click Chemistry

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Single‐atom catalysis hinges on fundamental challenges in precisely controlling metal‐support interactions and rationally regulating metal–adsorbate relationships. Herein, we report a universal strategy for constructing highly efficient and well‐defined Cu(I) single‐atom catalysts based on a trifurcate AlL3 molecular support.
Donghui Zhang   +9 more
wiley   +1 more source

宁夏盐池半荒漠区沙漠化土地综合治理生态工程效益评价

open access: yesShuitu Baochi Xuebao, 2003
讨论了半荒漠区沙漠化土地综合治理生态工程建设的资源、经济、生态环境和社会效益,在此分析的基础上应用综合评价方法对生态工程的这4种效益以及综合效益进行了定量化的综合评价,并建立灰色系统模型,预测了工程建设的延续效益,取得了满意的效果。
孙德祥 李少雄 等
doaj   +2 more sources

黄土丘陵区生态适宜型农村经济发展模式探讨

open access: yesShuitu Baochi Xuebao, 2002
基于黄土丘陵区在全国国土总体格局中的生态功能定位,本文以有效控制水土流失和整治生态环境为前提,在总结黄土丘陵区农村经济发展普遍性方向的基础上,重点讨论了在黄土丘陵区建设生态适宜型农村经济发展模式宜遵循的基本原则、主要内容、发展阶段及产业开发层次,并从生态环境效益、经济效益和可持续发展性等角度阐述了评判模式可行性及发育程度的基本方法.最后针对模式具体应用应注意的问题提出了若干建议.
徐勇 Roy C.Sidle 景可
doaj  

The comparison of the ecological characters of the zooplankton between the coastal waters off Cangnan and the waters off Feiyun River estuary [PDF]

open access: yes, 2015
为了研究我国亚热带北部边缘浮游动物区系和生态类群,从而为分析我国亚热带海域浮游动物群落特征形成的成因提供科学依据。本研究根据2010年~2011年在飞云江口外水域(27°46'~27°75'N,120°66'~121°01'E)冬、春、秋3个季节和2011年在苍南近岸水域(26°94'~27°27'N,120°41'~120°76'E)冬、春、夏季3个季节的海洋综合调查资料,在分析了我国亚热带北部边界的飞云江口外水域和苍南近岸水域这两个不同水域浮游动物的种类组成、区系适应性、优势种、物种多样性 ...
董开兴
core  

3D‐Printed Porous High‐Entropy Alloy Boosts Peroxymonosulfate Activation for Long‐Term Organic Pollutant Degradation

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT High‐entropy alloys (HEAs) have attracted considerable interest from researchers owing to their tunable chemical compositions, exceptional structural stability, and promising catalytic properties. However, their large‐scale application is often hindered by complex manufacturing techniques and poor durability.
Sheng Guo   +9 more
wiley   +1 more source

Influence of the rural land transfer on cultivate land resource’s sustainable utilization—from the view of the farmer’s behavior [PDF]

open access: yes, 2016
中国是世界上典型的人多地少、耕地资源贫乏的国家之一。国土资源部2013年12月30日发布的第二次全国土地调查公报的数据显示,2009年中国耕地数量虽然较1996年有所增加但人均耕地仍在下降,且有相当数量的耕地不适宜耕种或者在利用中受到不同程度的污染,耕地总体质量下降严重,耕地资源保护已经刻不容缓。农户是耕地保护最重要的主体,他们的耕地利用行为直接影响着耕地质量和未来可利用耕地的数量,而农地产权制度是农户行为最关键的影响因素。我国自20世纪80年代末开始建立并实施农地流转制度 ...
龙云
core  

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