| Taking five pioneer plants, sand locust, white sheep grass, black eared eyebrow grass, dog tail grass and white clover, as research objects, the correlation between plant community structure and soil fertility in different test areas was analyzed by plant investigation, soil nutrient determination and principal component analysis. The results indicated that compared with the control area, Shannon Wiener index(H) of different test areas was significant different, while Simpson dominance index(D) and Pielou evenness index(J) were not significantly different. H value of different plant communities in order of large to small were black spikelet plant community, white wool plant community, sand locust plant community, white clover plant community, dog tail plant community. The average content of available nitrogen and moisture in soil in different plant communities were significantly higher than those in the control area. Sand locust had the best effect on soil fertility, and white clover had the greatest impact on moisture in soil. |
