Study on the Functional Diversity of Soil Microorganisms in Different Vegetation Types on the Eastern Foothills of Helan Mountain
In this paper,the distribution of soil microbial functional diversity and biotic-abiotic driving factors were studied in four typical vegetation types of soils.The results showed that:(1)The ability of soil mi-croorganisms to utilize single carbon source was different with the change of vegetation type.The metabolic ac-tivity of soil microorganisms was highest in alpine meadows and lowest in desert grasslands.Carbohydrates,car-boxylic acids and amino acids were the main carbon sources used by soil microorganisms.(2)The Shannon in-dex and Mclntosh index of soil microbial functional diversity index of all vegetation types were the highest in Picea crassifolia and the lowest indesert steppe.Simpson index was the highest in alpine meadow.(3)Alti-tude,average annual rainfall,average annual temperature,water transpiration pressure and solar radiation at al-titude were the main factors causing differences in soil microorganisms among different vegetation types.
The eastern foothills of Helan MountainSoil microorganismsFunctional diversity
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