Relationship between the number of three main microorganisms and the soil environmentof degraded grassland on the north slope of the Tianshan Mountains

Abstract

Abstract: The relationship between microbial flora, degradation, and soil moisture factors were studied on the microbial flora in degenerated grassland of Tianshan north hillside. The microbial population was largest where there was no degradation and smallest where three was moderate degradation. The microbial population in the 10-20 cm soil layer was larger than that in the 0-10 cm layer. The bigger the soil moisture factor, the larger was the microbial population. Fungi were distinctly correlated with fungal K, available phosphorus and total phosphorus, but weakly positively correlated with nitrogen and positively correlated with density. Bacteria and Antinomies were both significantly positively correlated with pH. The alkali-hydrolyzable nitrogen, total nitrogen, available K, total K, available P, total P, organic matter, total salt contents and pH value were all highest in extremely degraded soil.

CLC Number:

GU Ai-xing, FAN Yan-min, WU Hong-qi, ZHU Jin-zhong, JIN Gui-li, Reziwanguli. Relationship between the number of three main microorganisms and the soil environmentof degraded grassland on the north slope of the Tianshan Mountains[J]. Acta Prataculturae Sinica, 2010, 19(2): 116-123.

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