نتایج جستجو برای: interest in climatic extreme events droughts

تعداد نتایج: 17028335  

Journal: :Philosophical Transactions of the Royal Society B: Biological Sciences 2017

2015
F. Yuan Y. Y. San Y. Li M. Ma L. Ren C. Zhao Y. Liu X. Yang S. Jiang

In this study, a framework to project the potential future climate change impacts on extreme hydrological drought events in the Weihe River basin in North China is presented. This framework includes a largescale hydrological model driven by climate outputs from a regional climate model for historical streamflow simulations and future streamflow projections, and models for univariate drought ass...

Journal: :Civil Engineering Journal 2021

The Souss-Massa region in southwestern Morocco is characterized by a semi-arid climate with high variability rainfall. Frequent droughts and flash flood events combined overexploitation of water resources recent decades have had significant impact on the human security economy which mainly based agriculture, tourism fishery. For better management extreme under changing climatic conditions, stud...

Journal: :Climatic Change 2023

Abstract As a result of ongoing climate change, extreme climatic events (ECEs) are expected to become more frequent and severe. The high biodiversity riverine ecosystems is susceptible ECEs, especially water temperature (extreme heat cold) discharge-related (flood drought) events. Long time series needed unravel the effects ECEs on ecological communities. Here, we used 20 years (1986–2005) unus...

2016
Guillermo Guada J. Julio Camarero Raúl Sánchez-Salguero Rafael M. Navarro Cerrillo

Mediterranean pine forests display high resilience after extreme climatic events such as severe droughts. However, recent dry spells causing growth decline and triggering forest dieback challenge the capacity of some forests to recover following major disturbances. To describe how resilient the responses of forests to drought can be, we quantified growth dynamics in plantations of two pine spec...

پایان نامه :0 1374

having conducted the experiment and analysed the data, the researcher computed the groups mean scores and variances for the test relating to the research question. as the final atep, a t-test was conodonted for the hypothesis. as noted earlier, the significance level was determined at .05 and .01 respectively. the observed t-value was higher than the critical t-value at. 5 and .01 levels. conse...

Journal: :Sustainability 2022

South Africa has been exposed to climate change and experiencing associated extreme climatic events such as droughts, floods, heat waves. These have impacted water fuel sources, habitats, human health, economic productivity. Poorer populations particularly females are more affected. The main objective of this study is therefore assess gender inequalities in employment resultant from the effects...

2015
Hilary Sigman Sheila M. Olmstead

This paper examines the global effects of droughts on economic activity and the influence of local and upstream large dams on this relationship. We use spatially-specific data on drought severity and nighttime lights data as a measure of economic activity. The analysis shows that severe and extreme droughts reduce local economic activity. In preliminary analyses, local dams appear to improve th...

Journal: :Proceedings. Biological sciences 2013
Jake M Alexander

A topic of great current interest is the capacity of populations to adapt genetically to rapidly changing climates, for example by evolving the timing of life-history events, but this is challenging to address experimentally. I use a plant invasion as a model system to tackle this question by combining molecular markers, a common garden experiment and climatic niche modelling. This approach rev...

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