Spectral reflectance properties for soil rangeland degradation and relationship with physical and chemical soil properties

	Spectral reflectance properties for soil rangeland degradation and relationship with physical and chemical soil properties
Journal of Tikrit University For Agriculture Sciences
Article 1, Volume 13, Issue 2, 2013, Pages 348-358
Abstract
The study included choose and delineation representative locations for studies soil reflectance properties soil rangeland. And making investigation and performance and involves addition soil sample representative locations for rangeland and to evaluation of status degradation for rangelands depending on criteria international described by Scientist Dregne, (1983) were considered by the FAO and UNEP in doing and drawing the desertification map and soil degradation in the world. The samples were brought to the lab, which involved on preparing soil samples from drying, grind and sieve out, to make some of determination and measurements physical and chemical on the soil sample which involves texture, organic matter, CaCO3, CaSO4. 2H2O, Ec, and pH. And to take part from soil sample and inputting in the dish as the dish patry account the values of soil reflectance -for the first time -directly by using Spectroradiometer. there is relationship between chemical, physical soil properties rangelands and spectral reflectance where wobble value reflectance (55- 77)% , where greater value in Tlool –Albag is occurred (77)% where is stronge regressionrelationship between reflectance and gypsum content which occurred value regression(0.92). On the basis using as properties distinguish delineation and diagnostic land degradation and desertification. And founding that soil which contain highly gypsum content was the spectral behavior distinguish compared with soil another.
Keywords
Soil; rangeland; physical

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