نتایج جستجو برای: agricultural drought risk
تعداد نتایج: 1065320 فیلتر نتایج به سال:
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...
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...
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 ...
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...
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 (...
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 ...
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...
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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