نتایج جستجو برای: drought duration

تعداد نتایج: 234998  

Journal: :Forests 2022

Under the background of climate warming, increase in frequency and severity drought leads to vegetation facing severe challenges. A comprehensive systematic assessment stability under stress middle reaches Yellow River basin (MRYRB) will help grasp characteristics response drought. In this study, normalized difference index (NDVI) was used achieve quantitative qualitative assessments drought, s...

Drought stress is one of the most important abiotic stresses in crops that can reduce yield and yield components in terms of time, duration and severity of the stress. Current research was carried out in order to evaluate drought stress tolerance in rice genotypes. Experiment done in two separate schemes using randomized complete blocks design with three replications in Research Field, Faculty ...

2013
Christopher A. Gabler Evan Siemann

The rate of new exotic recruitment following removal of adult invaders (reinvasion pressure) influences restoration outcomes and costs but is highly variable and poorly understood. We hypothesize that broad variation in average reinvasion pressure of Triadica sebifera (Chinese tallow tree, a major invader) arises from differences among habitats in spatiotemporal availability of realized recruit...

2008
Justin Sheffield Eric F. Wood

Recent and potential future increases in global temperatures are likely to be associated with impacts on the hydrologic cycle, including changes to precipitation and increases in extreme events such as droughts. We analyze changes in drought occurrence using soil moisture data for the SRES B1, A1B and A2 future climate scenarios relative to the PICNTRL pre-industrial control and 20C3M twentieth...

Journal: :Water Resources Research 2022

Abstract Drought‐affected regions often contain high densities of small reservoirs, usually informally built, as drought‐coping mechanism. These structures influence socio‐hydrological dynamics and have the potential to alter hydrological processes relevant drought emergence development. This study aimed analyze a concentration reservoirs on intensification evolution events. We present an innov...

Journal: :Frontiers in Physics 2021

Droughts have more impact on crops than any other natural disaster. Therefore, drought risk assessments, especially quantitative are significant in order to understand and reduce the negative impacts associated with droughts, a assessment includes estimating probability consequences of hazards. In achieve this goal, we built model based three-dimensional (3D) Copula function for proportion affe...

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