Results 1 to 10 of about 2,378 (123)

Effects of interactions between anthropogenic stressors and recurring perturbations on ecosystem resilience and collapse

open access: yesConservation Biology, Volume 37, Issue 1, February 2023., 2023
Abstract Insights into declines in ecosystem resilience and their causes and effects can inform preemptive action to avoid ecosystem collapse and loss of biodiversity, ecosystem services, and human well‐being. Empirical studies of ecosystem collapse are rare and hampered by ecosystem complexity, nonlinear and lagged responses, and interactions across ...
David A. Keith   +8 more
wiley   +1 more source

An emerging coastal wetland management dilemma between mangrove expansion and shorebird conservation

open access: yesConservation Biology, Volume 36, Issue 5, October 2022., 2022
Abstract Coastal wetlands around the world have been degraded by human activities. Global declines in the extent of important coastal wetlands, including mangroves, salt marshes, and tidal flats, necessitate mitigation and restoration efforts. However, some well‐meaning management actions, particularly mangrove afforestation, can inadvertently cause ...
Chi‐Yeung Choi   +7 more
wiley   +1 more source

Key n‐Gram Extractions and Analyses of Different Registers Based on Attention Network

open access: yesJournal of Applied Mathematics, Volume 2021, Issue 1, 2021., 2021
Key n -gram extraction can be seen as extracting n‐grams which can distinguish different registers. Keyword (as n = 1, 1‐gram is the keyword) extraction models are generally carried out from two aspects, the feature extraction and the model design.
Haiyan Wu   +5 more
wiley   +1 more source

Drivers of plant traits that allow survival in wetlands

open access: yesFunctional Ecology, Volume 34, Issue 5, Page 956-967, May 2020., 2020
A free Plain Language Summary can be found within the Supporting Information of this article. Abstract Plants have developed a suite of traits to survive the anaerobic and anoxic soil conditions in wetlands. Previous studies on wetland plant adaptive traits have focused mainly on physiological aspects under experimental conditions, or compared the ...
Yingji Pan   +8 more
wiley   +1 more source

用DRAINMOD模型预测不同气候条件下排水及来水量对湿地水文的影响

open access: yesShuitu Baochi Xuebao, 2003
水量减少是目前威胁湿地生存的一个重要原因.本文采用原美国农业部水土保持局(现美 国自然资源保护局,US-NRCS)所推荐的水管理模型DRAINMOD,根据该局1991年所 建议的湿地水文识别准则,利用不同气候条件下的降水资料,对湿润地区由于排水而引起湿 地水文情势的变化,以及干旱地区湿地形成过程中所需要的基本水量进行了预测分析.模拟结果表明对于年降水量大于1 000 mm的温暖湿润地区,在没有人工排水的情况下,湿地特征十分明显;当排水间距大于150 m时,仍可在50%的年份内满足湿地判别准则的湿润条件 ...
贾忠华, 罗纨, 莫放, 程慧艳
doaj   +2 more sources

Systematic protection and restoration of water bodies in collapse areas based on surface runoff regulation [PDF]

open access: yes
In order to solve the problems of surface runoff disorder, poor water connectivity, and weak hydrodynamic water circulation capacity in high groundwater level mining areas in the east, and to reduce the non-point source pollution and point source ...
Dong GUO   +5 more
core   +1 more source

Study on Urban Landscape Ecological Risk Measurement and the Influencing Factors in the Yellow River Delta [PDF]

open access: yes
[Objective] The Yellow River Delta, a typical ecological fragile area, faces prominent landscape ecological risk (LER) due to multiple factors. Systematic understanding of landscape risk is crucial for optimizing landscape patterns and effectively ...
LI Huilin   +4 more
core   +1 more source

湿地生态用水计算方法探讨与应用实例

open access: yesShuitu Baochi Xuebao, 2005
湿地生态用水是湿地为维持自身发展过程、保证基本生态功能发挥所需要的水量,作为一种特殊的生态系统类型,湿地的生态用水计算比其他生态系统复杂,其中包括湿地植被需水量、满足蒸发需水量、湿地土壤需水量、湿地动物需水量、野生生物栖息地需水量以及景观建设需水量等等。本文介绍了用水量平衡法计算湿地生态系统需水的方法,并分别探讨了湿地中植被、土壤、生物栖息地等诸项生态需水量的计算方法。用这些方法对乌梁素海湿地的生态用水量进行了具体探索。乌梁素海湿地包括内蒙古自治区的第二大淡水湖———乌梁素海及其周围的沼泽地 ...
崔丽娟 鲍达明 肖红 雷昆
doaj   +2 more sources

Carbon Sequestration and Balance in Kandelia candel Plantation Ecosystem in Jiulongjiang Estuary [PDF]

open access: yes, 2012
本文选择福建九龙江口不同发育阶段(中龄林、成熟林)的秋茄红树林为研究对象,通过测定秋茄红树林林木层各器官、凋落物层和土壤层含碳率,结合各组分生物量和年净生产量,计算了秋茄红树林生态系统的碳储量和不同发育阶段秋茄林的年净固碳量。于2010年5月至2011年4月,采用LI–8100全自动土壤CO2通量测定系统,研究了不同林龄秋茄林的土壤呼吸的日动态、月动态与季节差异,及其土壤水热因子对土壤呼吸的影响。通过测定样地的土壤含碳率和碳储量,以及秋茄林生态系统地上部分的年固碳量,分析评价了秋茄红树林生态系统的碳源 ...
金亮
core  

Advancing Water Security in the Tropical and Subtropical Regions: An Integrative Topic Modeling Approach

open access: yesWorld Water Policy, Volume 12, Issue 1, February 2026.
ABSTRACT Water security in tropical regions faces escalating pressures from climate change, land‐use shifts, and population growth. We conducted a bibliometric review of 1146 peer‐reviewed articles (1964–2023) on tropical water security. Latent Dirichlet Allocation identified 13 thematic topics and their evolution. Publications rose sharply after 2012,
Karling Fernanda Schuster   +3 more
wiley   +1 more source

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