Effect Of Ecological Restoration On Plant And Soil Nutrient Dynamics In Degraded Area Of Red Soil,Changting County

Changting County of Fujian Province is a typical eroded granitic area of red soil in Southern China. The vegetation destruction and irrational use of land resources by human in Changting Country,resulting in typical evergreen broad-leaved forest in middle-subtropic zone degenerated constantly, accompanied by a decline in serious soil erosion and soil quality,the continued loss of biodiversity,productivity decreased. The degraded and eroded area of red soil has become a major limiting factor for the sustainable development of industry and agriculture,constituting a serious threat to the sustainable development of regional ecological environment and social economy.The purposes of the study are to analysis the dynamic nutrient of vegetation-soil system during the ecological restoration.Thus, we choose four typical plots with different ecological restoration, by Using space-time replacement method, according to the degree of soil erosion, vegetation cover and biodiversity, treatment time and other indicators.Then we compared the distribution characteristics of carbon,nitrogen, phosphorus, potassium nutrition in different plant organs of dominant species. At the same time,we compared distributing characteristics of the7indicators for soil total organic carbon, total nitrogen, total phosphorus, total potassium, available phosphorus, available potassium and the pH value. We also analysis the strategy of the dominant species of Pinus massoniana for adapting erosion environment.This study has the important practical significance for promoting the growth level of degenerated Forest in the process of the ecological restoration, enhancing the benefits of soil and water conservation, providing the theory basis.