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[1]GENG Bo,YUE Yajun.Research on Soil Nutrient Status under Different Stands in the Red River Valley[J].Research of Soil and Water Conservation,2015,22(01):90-92.

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Research on Soil Nutrient Status under Different Stands in the Red River Valley

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 22 Number of periods: 2015 01 Page number: 90-92 Column: Public date: 2015-02-28

Title:: Research on Soil Nutrient Status under Different Stands in the Red River Valley

Author(s):: GENG Bo¹, YUE Yajun²; 1. Jungar Bureau of Soil and Water Conservation, Jungar Banner, Inner Mongolia 010399, China;
2. Matoutan Forestry Bureau, Baoji, Shaanxi, 721006, China

Keywords:: Red River Valley; different stands; forest soil; fertility

CLC:: S153.6

DOI:: -

Abstract:: Field investigation, soil sample collection and chemical analysis were carrried out in order to obtain the soil nutrient status of different forest types at the Red River Valley in Qinling Mountains. The soil organic matter, alkali hydrolyzable N, available P, K and CEC of four different forest stands including Quercus aliena BL., Quercus baronii, Carpinus turczaninowii, and Quercus liaotungensis Koidz at the Red River Valley were analyzed and compared. The results showed that Carpinus turczaninowii could significantly increase the level of forest soil organic matter, which was up to 97.45 g/kg in the 0—20 cm layer; the available nitrogen content was highest in the Quercus baronii forest soil, which was 204.92 mg/kg in the 20—30 cm layer; the Carpinus turczaninowii had the positive effects on improving the contents of available phosphorus and available potassium; Quercus aliena BL.had better soil nutrient keeping capability and soil buffer capacity than other three species. In general, the soil nutrient contents decreased with the increase of soil depth.

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