Arid
EVALUATION OF DESERTIFICATION POTENTIAL IN A SLOPING CATCHMENT
Oguz, Irfan1; Ersahin, Sabit2; Susam, Tekin3
通讯作者Oguz, Irfan
来源期刊CARPATHIAN JOURNAL OF EARTH AND ENVIRONMENTAL SCIENCES
ISSN1842-4090
出版年2011
卷号6期号:1页码:81-88
英文摘要

Variability of soil resources in space and time can be a useful indicator in evaluating desertification risk in arid and semi-arid regions. We have compared the coefficient of variation (CV) and the fractal dimension of spatial variation (D) for some selected properties of soils with a slope of < 3 degrees, designated as mild-to-moderate sloping (MMS) and soils with the slope of > 30 degrees, designated as moderate-to-steep sloping (MSS) soils, in a 1,041.2 ha catchment located in North-Central Anatolia, Turkey. The study area was sampled based on a random sampling scheme, taking a total of 142 geo-referenced samples from 0-0.30 m soil depth. All soil samples were analyzed for soil properties of electrical conductivity (EC), pH, soil organic matter (SOM), sand, silt, clay, and coarse material, cation exchange capacity (CEC), crusting index (CI), penetration resistance (PR), and soil erodibility factor (K). The spatial variation of soil variables was characterized in MHS and SMS soils by CV, semivariogram analysis, and D. In general, higher CV values occurred in SMS soils, and the nugget effect values calculated for these variables was lower in SMS soils, revealing a greater spatial dependency of these variables in these soils, and a greater potential for desertification in these areas. Variables with a stronger spatial structure had a higher CV and a lower D. In general, higher CV values and lower D values occurred in SMS soils, indicating a greater desertification potential of these soils. Strong spatial distribution of soil properties in both slope classes suggested that D should be preferred over CV in evaluating the desertification risk in these areas.


英文关键词Desertification risk probabilistic fractals coefficient of variation self-similarity slope steepness
类型Article
语种英语
国家Turkey
收录类别SCI-E
WOS记录号WOS:000288053800008
WOS关键词SOIL PROPERTIES ; SPATIAL VARIATION ; VARIABILITY ; DENSITY
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/167523
作者单位1.Gaziosmanpasa Univ, Dept Soil Sci, Fac Agr, Tokat, Turkey;
2.Cankiri Karatekin Univ, Dept Forest Engn, Fac Forestry, Cankiri, Turkey;
3.Gaziosmanpasa Univ, Vocat Sch, Tokat, Turkey
推荐引用方式
GB/T 7714
Oguz, Irfan,Ersahin, Sabit,Susam, Tekin. EVALUATION OF DESERTIFICATION POTENTIAL IN A SLOPING CATCHMENT[J],2011,6(1):81-88.
APA Oguz, Irfan,Ersahin, Sabit,&Susam, Tekin.(2011).EVALUATION OF DESERTIFICATION POTENTIAL IN A SLOPING CATCHMENT.CARPATHIAN JOURNAL OF EARTH AND ENVIRONMENTAL SCIENCES,6(1),81-88.
MLA Oguz, Irfan,et al."EVALUATION OF DESERTIFICATION POTENTIAL IN A SLOPING CATCHMENT".CARPATHIAN JOURNAL OF EARTH AND ENVIRONMENTAL SCIENCES 6.1(2011):81-88.
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