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[1]ZHAO Wei-jun,LIU Xian-de,JIN Ming,et al.Study on Soil Nutrient Characteristics of Picea crassifolia Forest in the West Segment of Qilian Mountains[J].Research of Soil and Water Conservation,2011,18(04):166-169.

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Study on Soil Nutrient Characteristics of Picea crassifolia Forest in the West Segment of Qilian Mountains

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 18 Number of periods: 2011 04 Page number: 166-169 Column: Public date: 2011-08-20

Title:: Study on Soil Nutrient Characteristics of Picea crassifolia Forest in the West Segment of Qilian Mountains

Author(s):: ZHAO Wei-jun^1,2, LIU Xian-de^1,2, JIN Ming^1,2, CHE Zong-xi^1,2, MA Yu^1,2; 1. Key Laboratory of Forest Ecology and Frozen Soil Hydrology Water Resourcesof Gansu Province, Zhangye, Gansu 734000, China;
2. Academy of Water ResourcesConservation Forests in Qilian Mountains of Gansu Province, Zhangye, Gansu 734000, China

Keywords:: the west segment of Qilian Mountains; Picea crassifolia; soil nutrient

CLC:: S714.2

DOI:: -

Abstract:: In the light of flied sampling and laboratory analysis, soil nutrient of Picea crassifolia forest in the eastern Qilian Mountains was studied. The results showed that: (1) The mean contents of soil total nitrogen, total phosphorus, total potassium and organic matter were (0.29±0.01)%, (0.051±0.001)%, (1.990±0.019)% and (7.96±0.40%), respectively, and their spatial variabilities were all in the middle level. Meanwhile, single factor variance analysis of 10 samples showed that there were no significant differences of soil total nitrogen, total potassium and organic matter overall mean in different plots (F<F_0.05), except the soil total phosphorus overall mean which is very significant (F<F_0.01); (2) In the soil profile, along with the increase of soil depth, soil organic matter and soil total nitrogen content firstly increase and then decline;soil total phosphorus increase gradually, but there was little difference;soil total potassium content presents first increase and then decrease. In the profile, spatial variability of soil total potassium content is weak, but other nutrient variation belongs to the middle level; (3) Soil organic matter content and total nitrogen content of surface soil layer (0-10 cm) have a significantly positive correlation, organic matter content of the soil and soil total phosphorus have a significant positive correlation, but with no significant correlation in soil total potassium content.

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