نتایج جستجو برای: arid and semi arid zones

تعداد نتایج: 16853983  

2004
Luc J. Christiaensen Kalanidhi Subbarao

Considerations of risk and vulnerability are key to understanding the dynamics of poverty. This study conceives vulnerability as expected poverty and illustrates a methodology to empirically assess household vulnerability using pseudo panel data derived from repeated cross sections augmented with historical information on shocks. Application of the methodology to data from rural Kenya shows tha...

2014
Farshad Kheiri

Iran Central Plateau encompasses a large proportion of this country. The weather in these flat plains is warm and arid with very little precipitation. Different attempts in architecture have been done to alleviate the weather severity of this area and create a living place compatible with humans’ comfort criteria. Investigations have showed that some of the most successful approaches in traditi...

Journal: :Soil systems 2021

Soil fertility must be viewed as a dynamic concept that involves the constant cycling of nutrients between organic and inorganic forms. In this context, it refers also to supply adequate amounts water aeration for plant growth. under arid semi-arid lands is constrained not only by limited availability but small matter contents. Most assessment systems are based on contents main parameter. Howev...

Reclamation of Arid LandsIt is our pleasure to inform you that Springer International Publisher (2017) has published a book entitled "Reclamation of Arid Lands" in English.This book is the result of joint collaboration between the University of Tehran, University of Kashan and Research Institute of Forests and Rangelands, whose authors are as follows:Mohammad Jafari: Professor, Faculty of Natur...

Journal: :Int. J. Applied Earth Observation and Geoinformation 2014
A. Moreno Fabio Maselli Marta Chiesi Lorenzo Genesio Francesco Primo Vaccari Guenther Seufert M. Amparo Gilabert Navarro

In arid and semi-arid environments, the characterization of the inter-annual variations of the light use efficiency ε due to water stress still relies mostly on meteorological data. Thus the GPP estimation based on procedures exclusively driven by remote sensing data has not found yet a widespread use. In this work, the potential to characterize the water stress in semi-natural vegetation of th...

2006
Rodger B. GRAYSON Andrew W. WESTERN Jeffrey P. WALKER Durga D. KANDEL Justin F. COSTELLOE David J. WILSON

Journal: :Regional Environmental Change 2023

Abstract Human-induced climate change significantly alters the spatiotemporal characteristics of zones, which drives agricultural land use and ecosystem change. However, detectability shifting zones rate time changes has yet to be adequately addressed at regional-to-local scale. We mapped analyzed temperature precipitation across Kenya during past four decades, linked those shifts in geographic...

2005
M. E. Taulis M. W. Milke

This research discusses some of the issues encountered while developing a set of WGEN parameters for Chile and advice for others interested in developing WGEN parameters for arid climates. The WGEN program is a commonly used and a valuable research tool; however, it has specific limitations in arid climates that need careful consideration. These limitations are analysed in the context of genera...

2006
P. M. Saco G R. Willgoose G. R. Hancock

Eco-geomorphology and vegetation patterns in arid and semi-arid regions P. M. Saco, G R. Willgoose, and G. R. Hancock School of Engineering, The University of Newcastle, Callaghan, New South Wales, 2308, Australia School of Environmental and Life Sciences, The University of Newcastle, Callaghan, New South Wales, 2308, Australia Received: 13 June 2006 – Accepted: 30 June 2006 – Published: 30 Aug...

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