منابع مشابه
Can Democracy Contribute to Prevent Famines in Dry Lands Africa?
It can be observed that the environmental focus on the climate change debate has ignored contribution of political factors in preventing famines. The question arises why famines occur much more frequently in some dry land areas than in others need to be answered satisfactorily. Can democracy contribute to prevent famines in dry land areas with adversely affected by climate change? As famine is ...
متن کاملWatershed Models for Predicting Nitrogen Loads from Artificially Drained Lands
Non-point sources of pollutants originate at the field scale but water quality problems usually occur at the watershed or basin scale. This paper describes a series of models developed for poorly drained watersheds. The models use DRAINMOD to predict hydrology at the field scale and a range of methods to predict channel hydraulics and nitrogen transport. In-stream changes of N load are estimate...
متن کاملBandsar agriculture: indigenous runoff-harvesting &climate change resilience in Iranian dry lands
Iranians have a very long history of water harvesting to address water scarcity and the consequences of frequent droughts. Among these strategies, Bandsar is a wide spread indigenous practice, which has been utilized in the central and the southern part of Khorasan province (the northeast Iran). Bandsar in Persian means a series of consecutive bands, berms, levees, or dikes. A Bandsar consists ...
متن کاملsowing depth effects on vetch yield in maragheh dry lands
increases forage production and economic production in rainfed condition requires attention to agricultural issues such as determination of appropriate sowing depth. so in order to determine the effect of different sowing depths of vetch this experiment was conducted in agricultural research station of maragheh as strip plot based on randomized complete block design with three species of vetch ...
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ژورنال
عنوان ژورنال: Nature Geoscience
سال: 2008
ISSN: 1752-0894,1752-0908
DOI: 10.1038/ngeo143