Ecological stoichiometry of C, N and P on different time enclosed in desertification steppe soil

2nd International Conference on Materials Science, Energy Technology and Environmental Engineering

材料科学;能源学;生态环境科学

Yang, W.Z.^1 ; Jiao, Y.^2 ; Jia, Y.Q.^3

Water-saving Agricultural Engineering Research Center, Inner Mongolia Normal University, Hohhot, China^1

College of Chemistry and Environmental Sciences, Inner Mongolia Normal University, Hohhot, China^2

Water Conservancy and Civil Engineering College, Inner Mongolia Agricultural University, Hohhot, China^3

关键词: Ecological stoichiometry;    Grassland desertification;    Inner Mongolia;    Measurement and analysis;    Research object;    Soil organic carbon;    Stoichiometric ratio;    Total phosphorus;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/81/1/012112/pdf
DOI  :  10.1088/1755-1315/81/1/012112

来源: IOP

【 摘 要 】

It is the research object for the ecological stoichiometry of C, N and P on the different time of desertification grasslands enclosed and grazing grassland in Taibusi country of the Inner Mongolia, China. Through the measurement and analysis on ecological stoichiometric ratio of C, N and P in soil, the time of desertification grassland enclosed is determined. There are 13 soil of desertification grassland with different en-closure time, and 1 soil of grazing grassland. They are analyzed for the soil organic carbon, total nitro-gen, total phosphorus content and their density. The C/N of soil were increased with the extension of the time of desertification grassland enclosed. To 22 years enclosed, the C/N of grassland desertification soil enclosed is greater than the soil of grazing grassland that is 17. After the desertification grassland is en-closed, the C/N of soil is 13, and it is accumulated to maximum for C and N, and The grazing period is the best.