Numerical analysis of soil and vegetation nutrient characteristics in the initial year of returning farmland in the core area of Tarim River Populus euphratica forest
[Objective]To preliminarily study the nutrient characteristics of soil and vegetation in the ini-tial year of the abandoned land in the core area of Populus euphratica public welfare forest in the middle and lower reaches of the Tahe River in the hope of providing basic data support for the ecological restoration of the abandoned land in the area.[Methods]The soil and vegetation in the core area of Populus euphratica forest in the middle and lower reaches of the Tahe River were taken as the research object in the initial year of returning farmland.The"S"shaped distribution method,field standard whole tree harvesting method,and multi-point mixing method were used to collect vegetation and soil samples,and indoor analysis methods were used to measure vegetation and soil nutrients.[Results](1)The soil nutrient content and the accumulation of vegeta-tion nutrient components were concentrated in Zone IV and Zone V.(2)At the vertical depth of the soil,nutri-ents were concentrated in the surface soil,and as the soil depth increased,the soil nutrient content decreased in sequence.However,at the 60-100 cm soil layer,there was a slight increase.There was significant difference in soil nutrient content between different soil layers and depths(P<0.05).(3)And there were significant differ-ences in the total N,total P,total K,and organic carbon content of residual cotton(cotton stalks,roots)and herbaceous plants in different fields(P<0.05).[Conclusion]This study indicates that the initial annual soil nutrient content of the abandoned land in the core area of the Populus euphratica forest nature reserve is high,which is conducive to the occurrence and development of desert vegetation communities and improve the com-munity succession rate,and it is of great significance for the vegetation restoration and environmental changes in the abandoned land of the Populus euphratica forest in Tahe,as well as the relationship between ecological transition zone vegetation restoration and regional ecological stability.
Populus euphratica forestreturned farmlandinitial yearnutrient characteristics
国家科技期刊平台
NSTL
万方数据
