Frontiers of Forestry in China >

2007 , Vol. 2 >Issue 4: 376 - 381

DOI: https://doi.org/10.1007/s11461-007-0060-x

Effects of different vegetation restoration models on soil microbial biomass in eroded hilly Loess Plateau, China

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  • 1.Institute of Soil and Water Conservation, Chinese Academy Sciences, China; Ministry of Water Resources, Northwest A&F University, Yangling 712100, China; Graduate University of Chinese Academy of Sciences, Beijing 100039, China; 2.Institute of Soil and Water Conservation, Chinese Academy Sciences, China; Ministry of Water Resources, Northwest A&F University, Yangling 712100, China; 3.Institute of Soil and Water Conservation, Chinese Academy Sciences, China; Ministry of Water Resources, Northwest A&F University, Yangling 712100, China; College of Forestry, Guizhou University, Guiyang 550025, China; 4.College of Forestry, Guizhou University, Guiyang 550025, China;

Published date: 05 Dec 2007

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Abstract

Vegetation restoration is a key measure to improve the eco-environment in Loess Plateau, China. In order to find the effect of soil microbial biomass under different vegetation restoration models in this region, six trial sites located in Zhifanggou watershed were selected in this study. Results showed that soil microbial biomass, microbial respiration and physical and chemical properties increased apparently. After 30 years of vegetation restoration, soil microbial biomass C, N, P (SMBC, SMBN, SMBP) and microbial respiration, increased by 109.01%–144.22%, 34.17%–117.09%, 31.79%–79.94% and 26.78%–87.59% respectively, as compared with the farmland. However, metabolic quotient declined dramatically by 57.45%–77.49%. Effects of different models of vegetation restoration are different on improving the properties of soil. In general, mixed stands of Pinus tabulaeformis–Amorpha fruticosa and Robinia pseudoacacia–A. fruticosa had the most remarkable effect, followed by R.pseudoacacia and Caragana korshinkii, fallow land and P. tabulaeformis was the lowest. Restoration of mixed forest had greater effective than pure forest in eroded Hilly Loess Plateau. The significant relationships were observed among SMBC, SMBP, microbial respiration, and physical and chemical properties of soil. It was concluded that microbial biomass can be used as indicators of soil quality.

Cite this article

XUE Sha, LIU Guobin, DAI Quanhou, YU Na, LAN Xue . Effects of different vegetation restoration models on soil microbial biomass in eroded hilly Loess Plateau, China[J]. Frontiers of Forestry in China, 2007 , 2(4) : 376 -381 . DOI: 10.1007/s11461-007-0060-x

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