Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (1): 17-23.doi: 10.11924/j.issn.1000-6850.2014-2200

Special Issue: 资源与环境 农业生态

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Research on Soil Ecological Stoichiometry Under Different Forest Types in Northwest Guangxi

杨保国,邓硕坤, and   

  1. Pang Shengjiang, Zhang Pei, Jia Hongyan, Yang Baoguo, Deng Shuokun, Feng Changlin, Wang Qingling(Chinese Academy of Forestry Experimental Centre of Tropical Forest, Pingxiang Guangxi 532600)
  • Received:2014-08-13 Revised:2015-01-19 Accepted:2014-10-15 Online:2015-03-18 Published:2015-03-18

Abstract: Soil of 3 different forest types in Yachang forest region, Guangxi (mixed conifer and broadleaved forest, evergreen-deciduous broadleaf-mixed forest, broadleaf forest) as the research object, the content and ecological stoichiometry of C, N, P, K in soil were analyzed. As the forest succession, the content of C, N, P, K in soil under 3 different forest types showed that the content of N in soil accumulated all through the forest succession while the content of C, P, K in soil firstly increased and then decreased, the carbon-nitrogen ratio had a decreasing tendency while C/P, C/K, N/P, N/K and P/K took on an increasing tendency. Correlation analyses revealed that the soil organic C had highly significant correlation with N/P and N/K, the total N had highly significant correlation with C/P while had significant correlation with C/K, the total P had highly significant correlation with C/K and N/K.