›› 2008, Vol. 25 ›› Issue (2): 185-191.DOI: 10.7523/j.issn.2095-6134.2008.2.007
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XIETianCheng1 ; QINPing2; XIEZhengGuan1;
1CollegeofResourceandEnvironment,GraduateUniversityoftheChineseAcademyofSciences,Beijing100049,China
2BureauofLandandResourcesofLiuzhouCity,Liuzhou545001,China