نتایج جستجو برای: agricultural drought

تعداد نتایج: 130420  

2014
Amin Zargar Rehan Sadiq Bahman Naser Faisal I. Khan

Drought is a stochastic natural hazard that is instigated by intense and persistent shortage of precipitation. Following an initial meteorological phenomenon, subsequent impacts are realized on agriculture and hydrology. Among the natural hazards, droughts possess certain unique features; in addition to delayed effects, droughts vary by multiple dynamic dimensions including severity and duratio...

Journal: :Remote Sensing 2015
Binbin He Zhanmang Liao Xingwen Quan Xing Li Junjie Hu

Existing drought indices have been widely used to monitor meteorological drought and agricultural drought; however, few of them are focus on drought monitoring for grassland regions. This study presented a new drought index, the Grassland Drought Index (GDI), for monitoring drought conditions in global grassland regions. These regions are vital for the environment and human society but suscepti...

2009
G. Mendicino A. Senatore P. Versace

An example of water resources management in agriculture applied to a southern Italian study area is presented. In the context of a proactive approach, the steps followed for the developing of three Plans are described: an Agricultural Strategic Water Shortage Preparedness Plan (ASP), aimed at reducing the vulnerability of the water supply system through the use of long term mitigation measures ...

2006
Mark Winslow Barry I. Shapiro Richard Thomas S. V. R. Shetty

ICARDA and ICRISAT are nonproft international agricultural research centers supported by the Consultative Group on International Agricultural Research (CGIAR). They focus on sustainable agricultural development for the dryland poor. They also convene a global, multi-institutional partnership known as the Desertification, Drought, Poverty and Agriculture Consortium (DDPA) to provide research con...

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...

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: :Proceedings of the National Academy of Sciences of the United States of America 2007
Rosa M Rivero Mikiko Kojima Amira Gepstein Hitoshi Sakakibara Ron Mittler Shimon Gepstein Eduardo Blumwald

Drought, the most prominent threat to agricultural production worldwide, accelerates leaf senescence, leading to a decrease in canopy size, loss in photosynthesis and reduced yields. On the basis of the assumption that senescence is a type of cell death program that could be inappropriately activated during drought, we hypothesized that it may be possible to enhance drought tolerance by delayin...

2018
Michael James Van Oosten Antonello Costa Paola Punzo Simone Landi Alessandra Ruggiero Giorgia Batelli Stefania Grillo

Ensuring stable crop yields in an era where climate change threatens traditional agricultural practices through altered rainfall patterns and increased urban consumption has become a vital concern in global food security. Projected freshwater availability for irrigation indicates that between 20 and 60 Mha of irrigated cropland may have to be reverted to rainfed management [57]. Formerly irriga...

2016
Haleh Khodaverdi Trevor Fowles Emily Bick Christian Nansen

Increases in severity and frequency of drought periods, average global temperatures, and more erratic fluctuations in rainfall patterns due to climate change are predicted to have a dramatic impact on agricultural production systems. Insect pest populations in agricultural and horticultural systems are also expected to be impacted, both in terms of their spatial and temporal distributions and i...

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