نتایج جستجو برای: land covers change
تعداد نتایج: 719606 فیلتر نتایج به سال:
owing to the vital effects of future land use changes, it is necessary to predict land use growth pattern before any decision making by the authorities and decision makers. purpose of this research is to model land use change of kohmare scorch plain of shiraz province using ordinary least squares regression (ols) for pre-processing variables and modeling using neural networks. to perform this m...
Due to human impact under climatic variations, western part of Northeast China has suffered substantial land degradation during past decades. This paper presents an integrated study of expansion process of salinized wasteland in Da’an County, a typical salt-affected area in Northeast China, by using Geographic Information Systems (GIS) and remote sensing. The study explores the temporal and spa...
The Meteorological Service of Canada (MSC) has developed a suite of land-cover sensitive algorithms to extract snow water equivalent (SWE) estimates from satellite passive microwave brightness temperatures. In the boreal forest, however, accurate passive microwave SWE retrievals using the MSC coniferous forest algorithm are hampered by consistent under-estimation. In February 2003, a collection...
............................................................................................................. viii CHAPTER 1: GENERAL INTRODUCTION ...................................................... 1 Dissertation Organization .................................................................................... 2 Literature Cited ..................................................................
Land use and land cover change have been of great concern in global change research in recent years. Base on comparison with the remote sensing data in1982 and 2000 and field investigation, the results of land cover and land use change were obtained by the method of landscape analysis. Ten types of land use were identified: riparian woods, riparian shrubbery, desert shrubbery, desert grassland,...
[1] A simple model is developed to describe the significant land-atmosphere interaction processes in the warm climate. It includes bulk soil hydrology, dynamic vegetation, and simple land-atmosphere interaction processes. The model can simulate the basic features of land surface control on evapotranspiration (ET) and exhibits a multiequilibrium behavior similar to that of some more complex mode...
Mechanisms of runoff generation in the humid tropics are poorly understood, particularly context land-use/land cover change. This study analyzed results 124 storm hydrographs from three tropical catchments markedly different vegetation and land-use history central Panama during 2017 wet season: actively grazed pasture, young secondary succession, near-mature forest. We used electrical conductiv...
In this study the effects of land use change from salt affected land to cropland on soil quality indicators were studied in Chahafzal region, Yazd province, central Iran. Composite soil samples from 0-30 and 30-60 cm depths of saline and cultivated land were taken. Soil particle size distribution, calcium carbonate, Available water capacity (AWC), Electrical conductivity (ECe), Soil reaction (p...
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