Results 51 to 60 of about 6,982 (156)

Study on the effect of Mytilopsis sallei on ecological environment in Yundang Lagoon, Xiamen [PDF]

open access: yes, 2009
外来物种沙筛贝(Mytilopsissallei)原产于中美洲热带水域,随着航运的发展入侵世界上许多国家和地区,对入侵地造成巨大的经济损失。筼筜湖位于厦门岛西南部,旧称筼筜港,原是一片天然的港湾。20世纪70年代初,为围海造田,修建了西堤,使筼筜港变成一座基本封闭的人工泻湖,水体污染较为严重,水交换能力大大减弱,改称筼筜湖。筼筜湖水体呈富营养化状态,湖内属重污染水体。海洋入侵种是生态变化的主要驱动者,它们适应当地栖息环境,与本地种竞争,还可能是带菌者,对生物多样性造成严重的危害。因此 ...
林和山
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Mitigating light pollution impacts on arthropods based on light‐emitting diode properties

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
Abstract Light pollution from artificial light at night (ALAN) is a significant environmental problem with far‐reaching consequences for ecological systems. Recent innovations in light‐emitting diode (LED) technology may offer sustainable outdoor lighting solutions, but scientific evidence is lacking. We investigated the effects of various LED lighting
Nicola van Koppenhagen   +3 more
wiley   +1 more source

Importance and spatial patterns of invisible fisheries in Amazonian clear‐water rivers as revealed by fisher knowledge and collaboration

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
The graphical abstract highlights the research collaboration with fishers through interviews to record fishers' knowledge and participatory monitoring, to provide data on small‐scale fisheries in three clear water rivers (Trombetas, Tapajos and Tocantins).
Renato A. M. Silvano   +10 more
wiley   +1 more source

2011年夏季渤海西北部、北部近岸海域的底层耗氧与酸化 [PDF]

open access: yes, 2012
于2011年6月下旬和8月下旬调查了渤海中央海区.6月份渤海所有测站底层溶解氧都超过7.0Mg/l,饱和度为85%~115%,PH为7.82~8.04.而到了8月份,在渤海西北部、北部近岸水深20~35M的带状区域内出现底层溶氧显著下降并且酸化的现象.溶解氧最低值为渤海北部近岸的3.3~3.6Mg/l,只有6月份的44%~47%;相应PH为7.64~7.68,比6月份低0.16~0.20.表观耗氧速率最高和PH降幅最大的测站都出现在渤海西北部近岸海域,累积溶解氧下降5.6Mg/l,PH降幅则高达0.29,
翟惟东, 许懿, 赵化德, 郑楠
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基于GIS和NFM的耕地多宜性评价方法与应用研究

open access: yesShuitu Baochi Xuebao, 2006
生态位适宜度是对经典生态位理论和方法的深化与发展,在合理优化利用环境资源,发挥作物、环境最大共生效应,及工农业布局和指导农业生产中具有重要的实际意义。在可持续发展理论的指导下,以江汉平原后湖地区耕地为研究对象,将生态位适宜度模型引入到多宜性评价研究中,采用加权平均和限制因子模型对各评价单元水稻、油菜、小麦和棉花4种作物的生态位适宜度进行了定量分析。结果表明:研究区生态位适宜度值整体较高,生境条件基本能满足作物的需求;部分地块的生境条件需要改善;限制该地区土地生产潜力的生态因子主要为:CEC,速效磷和全氮。
聂艳, 陈平
doaj   +2 more sources

Impact of biophysical characteristics of urban rivers on public perceptions of water‐related ecosystem services

open access: yesPeople and Nature, Volume 8, Issue 1, Page 225-237, January 2026.
Abstract Water‐related ecosystem services (WES) provided by urban rivers are influenced by complex interactions between social and ecological systems. Understanding the public perception of WES is crucial for sustainable planning and management of urban rivers in the future. Although studies on public perception on WES have been growing in recent years,
Qianzi Jiang   +6 more
wiley   +1 more source

Herbivore species and patch heterogeneity modulate grazing‐induced shifts in soil nematode trophic structure and energy flux

open access: yesFunctional Ecology, Volume 40, Issue 1, Page 163-175, January 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Grazing by large herbivores is a critical factor shaping grassland biodiversity and ecosystem functioning worldwide, yet its consequences for soil communities remain poorly understood.
Quanhui Ma   +12 more
wiley   +1 more source

基于RS和GIS的包头市土地利用动态及其生态效应定量研究

open access: yesShuitu Baochi Xuebao, 2006
在RS,GIS和多种模型支持下,对包头市1987~2002年土地利用动态及生态效应进行了研究。结果表明:(1)包头市1987~2002年林地、草地和水域有不同程度减少。而建设用地、未利用土地和耕地有不同程度的增加。土地利用类型变动的总体方向是:林地、草地和水域主要转向耕地。发生利用类型转移的草地中,31.5%转为未利用土地;新增耕地主要来自草地和未利用土地。二者分别占非耕地转为耕地总量的36.34%和27.6l%。新增建设用地主要来自草地和耕地。二者分别占非建设用地转为建设用地总量的49.86%和34 ...
郝慧梅, 任志远
doaj   +2 more sources

Dynamics of Phytoplankton Community Structure in the East China Sea using Generalized Additive Mixed Models [PDF]

open access: yes, 2013
本研究以东海2006~2012年11个航次的浮游植物类群组成数据,结合相应环境参数,将广义加性混合模型(GeneralizedAdditiveMixedModels,GAMMs)应用于模拟东海浮游植物类群组成对环境因子的响应动态。根据GAMMs的特点,将采样站位作为随机效应,以采样季节、总叶绿素a、温度和盐度为固定效应,充分考虑固定效应之间的交互作用,突出允许残差异质性在模型优化中的重要性,取得以下主要结果: 相对于其它模型,GAMMs的优势主要在于将站位作为随机效应能体现站位间的变化 ...
肖武鹏
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Spatial and temporal distribution of nitrite-dependent anaerobic ammonium and methane oxidation bacteria in mangrove wetland [PDF]

open access: yes, 2017
厌氧氨氧化(anaerobicammoniumoxidation,ANAMMOX)和反硝化型厌氧甲烷氧化(nitrite-dependentanaerobicmethaneoxidation,N-DAMO)反应是新发现的两类能够参与碳氮循环的微生物,它们的发现对完善全球碳氮循环理论具有重要意义。红树林湿地生态系统位于陆地和海洋交界处,周期性受海水浸淹,并且能够接受来自海洋和陆地的各种污染物,因此物质资源和生物资源都很丰富。同时,红树林湿地沉积物能够为ANAMMOX和N-DAMO微生物创造一个厌氧环境 ...
张满平
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