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[1]YI Hai-yan,GONG Yuan-bo,CHEN Lin-wu,et al.Soil Nutrient Status and Microbiological Properties in the Mountain Forests/Arid Valley Ecotone in the Upper Reaches of Minjiang River after Converting Farmland to Forest[J].Research of Soil and Water Conservation,2010,17(02):130-135.

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Soil Nutrient Status and Microbiological Properties in the Mountain Forests/Arid Valley Ecotone in the Upper Reaches of Minjiang River after Converting Farmland to Forest

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 17 Number of periods: 2010 02 Page number: 130-135 Column: Public date: 2010-04-20

Title:: Soil Nutrient Status and Microbiological Properties in the Mountain Forests/Arid Valley Ecotone in the Upper Reaches of Minjiang River after Converting Farmland to Forest

Author(s):: YI Hai-yan¹, GONG Yuan-bo¹, CHEN Lin-wu^1,2, ZHANG Min¹, TANG Chun-xiang¹, HUANG Zheng-quan¹, CHEN Xin¹; 1. Sichuan Agricultural University, Sichuang Key Laboratory of Ecological Forestry Engineering, Ya’an, Sichuan 625014, China;
2. Sichuan Academy of Forestry, Chengdu 610081, China

Keywords:: mountain forests/arid valley ecotone; soil nutrient; soil microorganism; vegetation restoration

CLC:: S152.6;S154.3

DOI:: -

Abstract:: Through field investigation and experiment analysis, the soil nutrient status and microbiological quantitative trait of the mountain forests/arid valley ecotone in the upper reaches of Minjiang river after converting farmland to forest was studied. The results showed that the soil organic matter and total nitrogen were in the order as the mountain forests > the lower edge of the mountain forest > the arid valley; for phosphorus as the lower edge of the mountain forest > the mountain forests > the arid valley; for soil pH as the arid valley > the lower edge of the mountain forest > the mountain forests, growing in number with the increase of soil depth. With the increase of the elevation, the numbers of fungi, bacteria, actinomycetes, ammonifiers and azotobacteria increased firstly and then reducd, while the numbers of cellulose-decomposing bacteria increased gradually. Meanwhile, through the investigation on the 3 different vegetation recovery models in the same elevation, the results showed that vegetation restoration could improve soil nutrient and increase the number of microbiological. Both the soil nutrients and microbiological properties were decreasing with the increase of soil depth. In this study, there is close correlation between soil microorganism and soil nutrient.

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