An Yuna,Huang Yixiong,Guan Ziling,2007.Comprehensive valuation on soil nutrient in Dongshan Island of Fujian.Journal of Anhui Agricultural Sciences,35(3):3926-3927.(in Chinese).
 Cai Wen,1994.Matter-element Model and Application.Beijing:Science and Technology Literature Press.(in Chinese).
 Cai Wen,Yang Chunyan,Lin Chunwei,2000.Extension Engineering Method.Beijing:Science Press.(in Chinese).
 Cui Xiaoyang,2007.Soil Resources.Beijing:Chinese Forestry Press.(in Chinese).
 DeBusk W F,Newman S,Reddy K R,2001.Spatio-temporal patterns of soil phosphorus enrichment in Everglades Water Conservation Area 2A.J.Environ.Qual.,30(4):1438-1446.
 DeBusk W E Reddy K R,Wang Y,2007.Spatial distribution of soil nutrients in a Northern Everglades Marsh:Water Conservation Area 2A.Soil Sci.Soc.Am.J.,71(5):1579-1583.
 Gao Junfeng,Li Changfeng,Zhang Honghui,2003.Soil spatial analysis and agricultural land use optimization by using GIS.Chinese Geographical Science,13(1):25-29.DOI:10.1007/s11769-003-0080-x.
 He Jieping,Kang Shian,1994.Application of major component analysis to evaluate the study of grassland soil fertilities.Journal of Neimenggu Forestry College,16(4):52-57.(in Chinese).
 He Wenshou,Ning Xia,2004.Spatial variation of soil phosphorus of farmlands in different regions of Ningxia.Chinese Journal of Soil Science,35(6):170-174.(in Chinese).
 Li Youkai,1989.Soil Agricultural Chemistry Conventional Analysis Method.Beijing:Science Press.(in Chinese).
 Li Yuefen,Tang Jie,Lin Nianfeng,2003.Application of grey system theory in evaluating grassland soil quality.Journal of Jilin Agricultural University,25(5):551-556.(in Chinese).
 Lin Nianfeng,Tang Jie,2005.Study on the environment evolution and the analysis of causes to land salinization and desertification in Songnen Plain.Quaternary Sciences,25(4):474-483.(in Chinese).
 Lu Sudan,Wang Guangyu,Wu Yalang et al.,2002.Integrated evaluation of soil nutrients in modern agricultural demonstration Garden of Dongyang County.Journal of Zhejiang Agricultural University (Agric.& Life Sci.),28(3):272-276.(in Chinese).
 Shui Jiangou,Wang Qiuzhen,2008.Ecological and economic benefits of vegetation management in citrus orchards on red soils.Pedosphere,18(2):214-221.
 Su Jinming,Fu Ronghua,Zhou Jianbin,2002.Statistical Software SPSS Series Application.Beijing:Publishing House of Electronics Industry.(in Chinese).
 Su Yonghong,Feng Qi,Liu Wei et al.,2006.Analysis on soil nutrients in the Erjina Delta.Arid Zone Research,23(1):133-137.(in Chinese).
 Tang Jie,Li Yangmei,Bian Jianmin et al.,2005.Application of matter-element and extension to groundwater quality evaluation.Hydrogeology and Engineering Geology,32(5):1-5.(in Chinese).
 Tang Jie,Lin Nian Feng,Bian Jian Min,2003.Application of GIS-ANN integrated technology to evaluating hazard degree of salt-alkalization of soil:Taking west plain of Jilin Province as an example.Journal of Natural Disasters,12(4):34-39.(in Chinese).
 Tang Jie,Wang Xuege,2008.Analysis of the land use structure changes based on Lorenz curves.Environmental Monitoring and Assessment,119(2):69-82.DOI:10.1007/s10661-008-0258-x.
 Tang Jie,Zhao Fengqin,Lin Nianfeng,2005.Application of integrated models in evaluating soil nutrients.Journal of Northeast Normal University (Natural Science Edition),37(1):109-112.(in Chinese).
 Victor H R,Robert R T,Emesto M,2004.Spatial variability of soil nutrients in disturbed riverine mangrove forests at different stages of regeneration in the San Juan River estuary,Venezuela.Estuaries and Coasts,27(1):44-57.DOI:10.1007/BF028035-59.
 Wang Zaolin,Yang Qingyuan,Zhan Guo et al.,2007.Application of grey system theory in evaluating paddy field soil quality——A case study of Qianwei County,Sichuan Province.Journal of Southwest China Normal University (Natural Science Edition),32(1):52-56.(in Chinese).
 Wu Huajun,Liu Nianfeng,He Jun,2006.Comprehensive assessment of ecological environmental by matter element analysis.Journal of Huazhong University of Science and Technology (Urban Science Edition),23(1):52-55.(in Chinese).
 Wu Wei,Tang Minghua,Liu Hongbin,2000.Fuzzy synthetic evaluation of soil nutrients.Journal of Southwest Agricultural Unicersity,22(3):270-272.(in Chinese).
 Xiang Zhimin,Xiang Rong,1999.Identification model of matter analysis of grading quality of agricultural and forest fruits.Operations Research and Management Science,8(4):63-69.(in Chinese).
 Yang Goudong,Wang Xiaojuan,2005.Soil fertility evaluation based on by artificial neural network.Chinese Journal of Soil Science,36(5):30-33.(in Chinese).
 Yuan Zhaohua,Lu Xiaogou,Zhou Jia,2006.Cumulative effects of different cultivating patterns on properties of albic soil in Sanjiang Plain.Chinese Geographical Science,16(2):133-140.DOI:10.1007/s11769-006-0007-4.