نتایج جستجو برای: drought management

تعداد نتایج: 880686  

ژورنال: علوم آب و خاک 2008
کرمی, عزت اله , کشاورز , مرضیه ,

Drought is an unavoidable natural disaster in dry and arid regions of the world. Studies indicate that Iran with its geographical and climatic characteristics is poor in water resources. Moreover, it is estimated that in 2025, Iran should increase the water resources by 112% in order to maintain status quo. Therefore, the occurrence of drought is more prevalent in the future. This implies a rea...

Journal: :Natural Hazards and Earth System Sciences 2017

2009

One of the challenges facing beef producers across Australia is the ever increasing occurrence of drought. Drought presents many obstacles to the management of a beef enterprise with countless operational, financial and emotional hurdles testing the resolve of beef producers. While often not on the top of the priority list, one of the considerations that managers of a stud cattle operation need...

Journal: :Biology letters 2014
Juan J Gaitán Donaldo Bran Gabriel Oliva Fernando T Maestre Martín R Aguiar Esteban Jobbágy Gustavo Buono Daniela Ferrante Viviana Nakamatsu Georgina Ciari Jorge Salomone Virginia Massara

Drought is an increasingly common phenomenon in drylands as a consequence of climate change. We used 311 sites across a broad range of environmental conditions in Patagonian rangelands to evaluate how drought severity and temperature (abiotic factors) and vegetation structure (biotic factors) modulate the impact of a drought event on the annual integral of normalized difference vegetation index...

Compliance with the drought, due to the complex nature of the phenomenon, depends on a variety of social, economic, environmental, infrastructure and management factors, and the development process of villages located in drought conditions also depends on several factors that are caused by drought conditions. The drying of Lake Urmia has also made the necessity and importance of adapting rural ...

2009
Haifeng Zheng Liding Chen Xiaozeng Han Xinfeng Zhao Yan Ma

Drought is the most critical environmental factor limiting the productivity of agricultural crops worldwide. Increased frequency and severity of drought are expected to accompany climate change and will negatively impact global food security. Wide yield variability from field to field, and consequently reduced average yield on a regional scale often occur under drought conditions. The reasons f...

2013
Stephen E. Beebe Idupulapati M. Rao Matthew W. Blair Jorge A. Acosta-Gallegos

Common beans (Phaseolus vulgaris L.) originated in the New World and are the grain legume of greatest production for direct human consumption. Common bean production is subject to frequent droughts in highland Mexico, in the Pacific coast of Central America, in northeast Brazil, and in eastern and southern Africa from Ethiopia to South Africa. This article reviews efforts to improve common bean...

Journal: :Scientific reports 2015
Alireza Farahmand Amir AghaKouchak Joao Teixeira

Each year, droughts cause significant economic and agricultural losses across the world. The early warning and onset detection of drought is of particular importance for effective agriculture and water resource management. Previous studies show that the Standard Precipitation Index (SPI), a measure of precipitation deficit, detects drought onset earlier than other indicators. Here we show that ...

2015
José Nilson B. Campos

This paper describes the evolution of drought-related public policies in Northeast Brazil (NEB). Using a historical approach, we show that the evolution of public policy has not been characterized by abrupt shifts, but has instead been shaped through debates between renowned intellectuals. The resulting public policies formed a hydrological infrastructure that delivers clean water needed for ro...

2016
Donald A. Wilhite Kenneth G. Hubbard

Donald A. Wilhite and Kenneth G. Hubbard Center for Agricultural Meteorology and Climatology University of Nebraska Lincoln, Nebraska The ability to collect weather data in near-real time has improved because of technological advances, enabling weather data users to obtain more weather data over wider areas, and in a more timely fashion. The number of near-real time climate networks is increasi...

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