Results 21 to 30 of about 5,572 (212)

An analysis on floods and droughts in the five provinces of Huaihe River Basin from 1960 to 2014(1960~2014年淮河流域5省旱涝变化)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2017
基于1960~2014年淮河流域5省72个站点的气温、降水数据,运用克里金插值法、标准化降水指数(SPI)、Mann-Kendall突变检验等方法进行分析,探讨该地区气候变化特点,分析淮河流域5省旱涝灾害的变化趋势.结果显示:(1)1960~2014年淮河流域5省多年平均气温为14.463 ℃,并以0.009℃ • a-1的速率上升,1997年年均温发生突变,空间上温度变化大体呈现由西南向东北递减的趋势;(2)年降水量呈缓慢递减趋势,下降速率为0.28 mm • a-1,且年降水量存在3个较为明显的峰值,
ZHANGPing(张平)   +3 more
doaj   +1 more source

Scaling from microsite to landscape to resolve litter decomposition dynamics in globally extensive drylands

open access: yesFunctional 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
wiley   +1 more source

新疆兔属三物种潜在生境分布及未来气候变化的影响

open access: yes野生动物学报, 2020
气候变化是导致生境丧失和生物多样性下降的主要因素之一。研究气候变化对物种生境的影响对于保护物种多样性,维护生态系统功能完整性具有重要意义。本研究以新疆为研究区域,以塔里木兔、草兔和雪兔为研究对象,选取可能影响它们生境分布的10个环境因子,利用MaxEnt模型预测它们当前和未来RCP 4.5和RCP 8.5两种气候情景下2041—2060年(2050s)、2061—2080年(2070s)的潜在生境分布,并找出影响生境分布的关键因子。研究结果表明,模型预测新疆兔属3个物种生境分布的精度达到较高水平 ...
伊拉木江·托合塔洪1阿迪力·艾合麦提 1   +5 more
doaj  

Multiple global change factors alter the scaling of nitrogen to phosphorus in alpine plants

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The stoichiometry and allometry of nitrogen (N) and phosphorus (P) reflect nutrient absorption and dynamic allocation by plants, and can be regulated by global change factors (e.g. nitrogen enrichment, climate warming and altered precipitation). Yet, how multiple global
Jiapu Li   +10 more
wiley   +1 more source

气候变化对中国梅花鹿潜在栖息地影响

open access: yes野生动物学报, 2021
研究表明,气候变化将会使生物多样性降低甚至是物种灭绝。研究气候变化对物种栖息地的影响,对未来研究物种多样性和保护生态系统功能完整性提供实践意义。以梅花鹿(Cervus nippon)为研究对象,将23个环境因子通过去相关性后得到8个环境因子,利用最大熵(MaxEnt)模型模拟了梅花鹿基准气候条件下在中国潜在生境分布,并预测了ssp245和ssp585两种气候变化情景下2021—2040年(2030s)、2041—2060年(2050s)、2061—2080年(2070s)梅花鹿潜在分布。23个环境因子中,
刘策 张日 杜海荣 孙悦 袁子奥 于晶晶 张明海
doaj  

Incorporating cyclone risk in the design of marine protected and conserved areas as an ecosystem‐based adaptation approach

open access: yesConservation Biology, EarlyView.
Abstract Marine protected and conserved areas (MPCAs) are promoted as an ecosystem‐based adaptation (EbA) approach to increase community and ecosystem resilience to climate change. However, traditional approaches to MPCA design typically do not consider climate risk or habitat condition under a climate threat.
Alyssa L. Giffin   +6 more
wiley   +1 more source

Finding floral and faunal species richness optima among active fire regimes

open access: yesConservation Biology, EarlyView.
Abstract Changing fire regimes have important implications for biodiversity and challenge traditional conservation approaches that rely on historical conditions as proxies for ecological integrity. This historical‐centric approach becomes increasingly tenuous under climate change, necessitating direct tests of environmental impacts on biodiversity.
Zachary L. Steel   +8 more
wiley   +1 more source

Predictions of southern migration timing in coastal sharks under future ocean warming

open access: yesConservation Biology, EarlyView.
Abstract Projected redistribution of marine species due to ocean warming may undermine current conservation efforts. Yet, there have been few studies on how ocean warming may alter migration timing. Across 5 years of acoustic telemetry data (2018–2022), we determined environmental drivers of southward migration timing for 6 migratory shark species from
Maria H. Manz   +16 more
wiley   +1 more source

近几十年来中国北方极端气候变化对比研究 A Comparison Study of Extreme Climate Changes in Different Areas in Northern China

open access: yes, 2017
极端气候事件是一个包括诸多气象灾害事件的复杂系统,已成为当今国际社会普遍关注的热点问题。通过搜集近50年来中国东北、华北及西北地区的极端高温、极端低温事件的记录,利用Photoshop软件进行数据整理分析发现:华北地区极端最高气温上升速率较大,东北地区极端最低气温的上升速率最大,其次是华北地区;东北地区降水量减少,极端降水事件增多、增强,旱涝灾害频发;华北地区极端降水量明显减少,极端降水事件发生频次减少、强度减弱,有干旱的趋势;西北地区极端降水事件增多、增强,大多数地区干旱事件增多 ...
齐秀堃, 唐耀, 周颖, 李冬玲
semanticscholar   +1 more source

气候变化对大熊猫影响的研究进展

open access: yes野生动物学报, 2018
气候变暖是全球气候变化最主要的表现形式。由于人类活动的影响,全球气候变暖已成为不可逆转的趋势,严重影响物种的生存和繁衍。大熊猫作为世界珍稀濒危物种中的旗舰保护种,具有扩散、繁殖能力低、食物单一、分布范围窄、生境破碎化严重等特点,对气候变化较为敏感,气候变化极有可能成为大熊猫新的生存危机。因此,掌握气候变化形势、科学认识气候变化对大熊猫的影响,对大熊猫的保护工作有重要的理论和现实意义。文章总结了目前气候变化对大熊猫影响的研究进展,提出了一些存在的问题及建议。目前,关于气候变化对大熊猫影响的研究初有成果 ...
王玉君 李玉杰 张晋东
doaj  

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