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Proceedings Paper

Spatial variability of soils in vegetation zone of Fukang oasis
Author(s): Guanghui Lu; Qingdong Shi; Xiaoling Pan; Weiqing Li; Xiwu Zhan; Shunli Chang
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Paper Abstract

Soil samples collected from vegetation zone of Fukang oasis in South Junggar Basin were analyzed. The soil samples were air-dried and their PH values, electrical conductivity and total salts were analyzed in the laboratory. Soil samples were weighted and mixed with distilled water by a ratio of 1:5 after stirred and settled over night. Moisture content of soil was measured by the dry-method, PH value was measured by SM-10 digital acidity-meter, and electrical conductivity was measured by weight-method. The PH value, electrical conductivity and total salts of soil were measured from 0-10cm, 10-30cm and 30-50cm vertically. The study uses SAS software to analyze the statistical characteristic of the moisture content, electrical conductivity and total salts of the soil samples. The results show that soil properties are inhomogeneous. From the surface to below 50cm, moisture content and electrical conductivity increase successively, the change of PH value is not significant. The soil is alkalescence. In most circumstances, the data of moisture content, PH value and electrical conductivity are normally distributed. But, in the procession, soil properties influenced by systematic variance of soil properties deviated for normal distribution with various degrees. Soil moisture content, PH value and electrical conductivity do not satisfy simple linear relation at the vegetation zone of Fukang oasis. Using the method of trend surface analysis, the polynomial relation of variances (P<0.01) was obtained and found that moisture content is higher related with electrical conductivity at different depths, but the correlation between moisture content and PH value, and the correlation between PH value and electrical conductivity change with different environment factors.

Paper Details

Date Published: 22 December 2003
PDF: 8 pages
Proc. SPIE 5153, Ecosystems' Dynamics, Agricultural Remote Sensing and Modeling, and Site-Specific Agriculture, (22 December 2003); doi: 10.1117/12.511846
Show Author Affiliations
Guanghui Lu, Xinjiang Univ. (China)
International Ctr. for Desert Affairs (China)
Qingdong Shi, Xinjiang Univ. (China)
International Ctr. for Desert Affairs (China)
Xiaoling Pan, Xinjiang Univ. (China)
International Ctr. for Desert Affairs (China)
Weiqing Li, International Ctr. for Desert Affairs (China)
Xiwu Zhan, International Ctr. for Desert Affairs (China)
NASA Goddard Space Flight Ctr. (United States)
Shunli Chang, Xinjiang Univ. (China)
International Ctr. for Desert Affairs (China)


Published in SPIE Proceedings Vol. 5153:
Ecosystems' Dynamics, Agricultural Remote Sensing and Modeling, and Site-Specific Agriculture
Wei Gao; David R. Shaw, Editor(s)

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