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《Acta Ecologica Sinica》 2007-05
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Comprehensive evaluation of fertility quality in hilly tea plantation soils based on GIS and geostatistics

LIAO Gui-Tang1,LI Ting-Xuan1,2,, WANG Yong-Dong1,ZHANG Xi-Zhou1,Feng Na-Na11 College of Environmental and Resource Since, Sichuan Agriculture University, Yaan 625014,China2 Institute of Soil Science, Chinese Academy of Science, Nanjing 210008, China  
The subtropical low hill areas have the largest tea fields in China. Research on soil fertility is fundamental for accurate information management of the tea cultivations. A comprehensive evaluation of the soil fertility in Mengding Mountain was carried out with Geostatistics, GIS, and statistics methods. The study shows: (1) The soil fertility quality of Mengding Mountain is changing dramatically with the change of altitude. The hill can also be divided into different sections delimited by their fertility level: the richest soils are located in the middle and top section of the hill; the poorest, at the bottom. In other words: the higher the elevation, the richer the soil; the lower the elevation the poorer the soil. (2) The overall fertility level in Mengding Mountain is not high. There is a difference between today’s Mengding fertility quality situation and the soil quality standards of good tea fields.In fact, most of Mengding Mountain has a low-grade quality soil. Indeed, the fourth and fifth grade soils cover 42.35% of the whole area. In contrast, the highest-grade soil accounts for less than 10%.(3) The application of this comprehensive method provides accurate and objective information on the soil fertility quality. It also gives a new practical approach to Geostatistics.
【Fund】: 国家自然科学基金资助项目(32230250);; 四川省科技厅应用基础研究资助项目(03JY0290301);; 四川省教育厅重点研究资助项目(2003A022);; 四川农业大学科技创新基金资助项目(2005)~~
【CateGory Index】: S571.1
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