Genetic Characteristics And Taxonomic Classification Of Representive Soil In Zhangzhou City Of Fujian Provenice

At present, the international majority of soil classification is the Soil Taxonomy that is based on the Diagnostic horizons and Diagnostic characteristics, and characterized by quantification. Quantification, standardization and international are the trends of soil classification. Soil in Zhangzhou city of Fujian province is the representative soil in tropical and subtropical regions of our country. At past, reports on soil classification about Zhang Zhou even Fujian are based on soil genetic classification, and the research based on soil taxonomy classification has not spreaded out in the round. The object in this research is the119soil samples of30representative soil profiles from Fujian province Zhangzhou city. According to the field investigation, sample collection and indoor analysis, base on Keys to Chinese Soil Taxonomy(3rd edition), we identified the diagnostic horizons and diagnostic characteristics, retrieval of soil types, determine the attribution of the soil in this region in Chinese Soil Taxonomy, which enrich and improve Chinese Soil Taxonomy by providing a scientific. It not only has the theory significance in academic, but also has the practical guiding significance for the regional sustainable development of natural resources utilization. The results show that:(1) Soil properties are affected by parent material, elevation and land-use types or vegetation. Soil parent material influent soil texture, pH, exchange properties, the content of soil organic matter, total iron and ferrous iron a lot; Under the condition of the same parent material, the content of organic matter in topsoil increases with the increase of altitude:The content of organic matter in topsoil is affected a lot by land-use types or vegetation.(2) According to Keys to the Chinese Soil Taxonomy (CST)(the3rd edition), the diagnostic surface horizons that the studied soil profiles have are as follows:Ochric epipedons,Anthropic epipedon; the diagnostic subsurface horizons are:Cambic horizon, Ferralic horizon, LAC-ferralic horizon, Hydragric horizon, Argic horizon; the diagnostic characteristics:Vertic features, Soil moisture regimes, Soil temperature regimes, Redox features, Humic property, Ferric property, Alic evidence.(3) According to Keys to Chinese Soil Taxonomy (3rd edition), the soils are divided into7orders:Anthrosols, Ferralosols, Vertosols, Ferrosols, Argosols, Cambosols, Primosols. The soils are divided into7Suborders:Stagnic Anthrosols, Udic Ferralosols, Ustic Vertosols, Udic Ferrosols, Udic Argosols, Udic Cambosols, Orthic Primosols. The soils are divided into10Groups:Fe-accumuli-Stagnic Anthrosols, Hapli-Stagnic Anthrosols, Hapli-Udic Ferralosols, Hapli-Ustic Vertosols, Argi-Udic Ferrosols, Ali-Udic Argosols, Ferri-Udic Argosols, Ali-Udic Cambosols, Freei-Udic Cambosols, Udi-Orthic Primosols. The soils are divided into12Subgroups:Typic Fe-accumuli-Stagnic Anthrosols, Typic HapliStagnic Anthrosols, Xanthic Hapli-Udic Ferralosols, Aridic Hapli-Ustic Vertosols, Eutrophic Argi-Udic Ferrosols, Typic Ali-Udic Argosols, Red Ferri-Udic Argosols, Typic Ferri-Udic Argosols, Typic Ali-Udic Cambosols, Red Freei-Udic Cambosols, Typic Freei-Udic Cambosols, Typic Udi-Orthic Primosols.