نتایج جستجو برای: agricultural drought risk

تعداد نتایج: 1065320  

2017
Shahrbanou Madadgar Amir AghaKouchak Alireza Farahmand Steven J. Davis

Increases in the severity and frequency of drought in a warming climate may negatively impact agricultural production and food security. Unlike previous studies that have estimated agricultural impacts of climate condition using single-crop yield distributions, we develop a multivariate probabilistic model that uses projected climatic conditions (e.g., precipitation amount or soil moisture) thr...

2004
R. Tothy Rudhill Brook

Water quality data, collected by the Environment Agency in England and Wales over 10 years (1991 – 2000) were used to examine the spatial distribution of nutrient pollution risk and for assessing broad-scale spatial and temporal variability in nutrient fluxes across the Wye catchment. Nutrient water quality across the upper and middle Wye catchment, and along the main River Wye, is generally ve...

Journal: :International Journal of Environmental Research and Public Health 2020

Journal: :Science of The Total Environment 2021

Droughts are recurring events in Australia and cause a severe effect on agricultural water resources. However, the studies about drought risk mapping very limited Australia. Therefore, comprehensive assessment approach that incorporates all components with their influencing criteria is essential to generate detailed information for operational management. A was prepared this work incorporating ...

Journal: :Journal of Water and Climate Change 2023

Abstract As a natural hazard, drought is complex multivariate phenomenon that requires more comprehensive analysis. In this study, we studied meteorological, agricultural, and hydrological events with precipitation, soil moisture, stream flow data for the study area. The risk analysis duration severity of three kinds were analyzed univariate bivariate return periods based on copula. Furthermore...

2018
Venkatesh P. Thirumalaikumar Vikas Devkar Nikolay Mehterov Shawkat Ali Rengin Ozgur Ismail Turkan Bernd Mueller‐Roeber Salma Balazadeh

Water deficit (drought stress) massively restricts plant growth and the yield of crops; reducing the deleterious effects of drought is therefore of high agricultural relevance. Drought triggers diverse cellular processes including the inhibition of photosynthesis, the accumulation of cell-damaging reactive oxygen species and gene expression reprogramming, besides others. Transcription factors (...

Journal: :J. Inf. Sci. Eng. 2006
Hsu-Yang Kung Jing-Shiuan Hua Chaur-Tzuhn Chen

Taiwan faces a serious challenge with an increasing frequency of drought in recent years. Therefore, it is important to utilize the state-of-the-art sensing and communication technologies to monitor and forecast effectively the drought, and then notify the relevant departments for taking preventive measures against this natural disaster. This paper proposed and developed a Drought Forecast and ...

Journal: :Water 2021

Drought is one of the major threats to water and food security in many regions around world. The present study focuses on evaluation agricultural drought risk from an integrated perspective, that is, emphasizing combined role hazard, exposure, vulnerability drought. For this purpose, we used Mexican state Zacatecas as a case study. This most vulnerable adverse effects country. proposed method i...

Journal: :Theoretical and Applied Climatology 2023

Abstract In the tropical-humid region, wet farming crops (e.g., paddy) are a common agricultural commodity with high-water requirement. Usually planted in Asia monsoon region high precipitation rate, these divided into cropping season and dry season. During season, they particularly vulnerable to drought caused by decrease precipitation. This study used Indonesia as case is aimed at assessing r...

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