Typical Soil Series Research And Land Use In Southern Xinjiang

Soil research is the basis of soil classification,and accurate soil research is the prerequisite for soil classification.At present,the investigation of soil series in the eastern part of China has been completed,and the soil series has been established about 2870,while the research of the soil series in the central and western regions of China is in its infancy.Since China’s reform,the farmland soil research of southern Xinjiang remained on the second soil census,with the simple way of former research and the long time span,the classification of the basic problems is very inaccurate.It is hard to know the farmland soil actuality and guide the rational land use in southern Xinjiang.Through soil series research in southern Xinjiang,the purpose of this paper is to select the nanjiang 34 soil profile,identify the diagnostic horizons and characteristics,combined with some physical and chemical properties to anticipate the advanced classification,according to tu soil classification principle and basis,defining and the typical soil family and the name of soil series.According to the research,we choose some points to explore the southern Tianshan mountains’ soil distribution characteristics,and explore the impact of human use of soil types,puts forward a convenient table for recording in field investigation.The main result of this paper is the following: first,put forward a convenient table for recording in field investigation.Second,the identification of diagnostic horizons and characteristics in southern xinjiang,predicting its advanced classification,belong to 7 soil order,inclouding Anthrosols,Aridosols,Halosols,Gleyosols,Isohumosols,Cambosols and Primosols.The main conclusion of this paper is the following: first,according to the points’ location,we choose some typical soil of southern Tianshan mountain,to explore the distribution characteristics,according to the different altitude and latitude showed,southern Tianshan mountain’s soil type shows the characteristics of ‘(thick bone loamy-loamy,Typic-Hapli – Mottlic-Siltigic)Cambisols,Gleysols,Aridosols,Primosols–Cambisols’.Second,Southern xinjiang sampling points in different altitudes show ‘ mountain desert grassland-alpine agriculture(piedmont alluvial plains)-subalpine meadow-the oasis agriculture – desert’ landscape characteristics,the forms of soil types show ‘Cambosols – Anthrosols-Aridosols’ characteristics.Third,the study found that the unreasonable farming and farming system will lead to degradation of soil types,and the long using for agriculture by Xinjiang construction corps will lead to the evolution of soil from ‘Primosols’ to ‘Cambosols’.