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[1]DENG Piaoyun,7,ZHOU Yunchao,et al.Control Factors of Soil Microbial Biomass Phosphorus in Stands of Chinese Fir Plantations With Different Ages in Huitong, Hunan Province[J].Research of Soil and Water Conservation,2019,26(01):260-265.

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Control Factors of Soil Microbial Biomass Phosphorus in Stands of Chinese Fir Plantations With Different Ages in Huitong, Hunan Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 01 Page number: 260-265 Column: Public date: 2019-02-28

Title:: Control Factors of Soil Microbial Biomass Phosphorus in Stands of Chinese Fir Plantations With Different Ages in Huitong, Hunan Province

Author(s):: DENG Piaoyun^1,7, ZHOU Yunchao¹, YAN Wende^2,3,4, CHEN Xiaoyong^2,3,5, LIU Mingli⁶, CAO Juan², LIU Qibo⁸; 1. College of Forestry, Guizhou University, Guiyang 550025, China;
2. Central South University of Forestry and Technology, Changsha 410004, China;
3. National Engineering Lab for Applied Technology of Forestry & Ecology in South China, Changsha 410004, China;
4. National Key Station for Field Scientific Observation & Experiment, Huitong, Hunan 418307, China

Keywords:: path analysis; microbial biomass P; Bray 1-P; inorganic phosphorus fraction; organic phosphorus fraction

CLC:: S714.2

DOI:: -

Abstract:: Changes in total P, Bray 1-P, microbial biomass P, inorganic P and organic P fractions in soils were investigated in four aged Chinese fir plantation forests (3, 8, 18 and 26-year-old stands) in Huitong, Hunan Province, China. Stepwise regression analysis and path analysis were used to reveal the dominant factors affecting soil microbial biomass P form phosphorus factors and soil physical and chemical properties. The results showed that:(1) the average value of the microbial biomass P content was 6.90 mg/kg in the four examined aged stands. the average concentrations of total P and Bray 1-P were 320.71 mg/kg, 1.77 mg/kg, respectively, but they were all at the low levels; (2) the influence of factors on MB-P in four aged Chinese fir plantation forests:In 3-year-old stand, Bray 1-P,Al-P were significantly positively correlated with MB-P; in 8-year-old stand, N/P,LO-P, soil water,and MRO-P were positively correlated with MB-P; in 18-year-old stand, Fe-P,N/P, Al-P,Bray 1-P were positively correlated with MB-P; in 26-year-old stand, Fe-P, TP were positively correlated with MB-P. In conclusion, different factors of stands with different ages had different influence on MB-P.

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