文献类型：期刊文献

英文题名：Effects of Thinning on Soil Organic Carbon Fractions and Soil Properties in Cunninghamia lanceolata Stands in Eastern China

作者：Cheng, Xiangrong[1,2] Yu, Mukui[1] Wang, G. Geoff[2]

第一作者：成向荣;Cheng, Xiangrong

通信作者：Yu, MK[1]

机构：[1]Chinese Acad Forestry, Inst Subtrop Forestry, East China Coastal Forest Ecosyst Long Term Res S, Hangzhou 311400, Zhejiang, Peoples R China;[2]Clemson Univ, Sch Agr Forestry & Environm Sci, Clemson, SC 29634 USA

年份：2017

卷号：8

期号：6

外文期刊名：FORESTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000404099800022)】；

基金：This project is supported by the National Natural Science Foundation of China (Grant No. 31300519), Natural Science Foundation of Zhejiang Province (LY12C16007), the Fundamental Research Funds for the Central Non-profit Research Institution of RISF-CAF" (CAFYBB2014QB013, RISF61257), and the China Scholarship Council.

语种：英文

外文关键词：thinning; SOC fractions; soil physical properties; soil chemical properties; soil quality

摘要：Soil organic carbon (SOC) fractions, along with soil properties, are greatly affected by forest management. In this study, three thinning treatments: control (conventional management mode), moderate thinning intensity and heavy thinning intensity, were applied in Chinese fir (Cunninghamia lanceolata) plantations in eastern China. The dissolved organic carbon (DOC), soil light fraction organic carbon (LFOC) and heavy fraction organic carbon (HFOC), total SOC, DOC/SOC and LFOC/HFOC were not affected by thinning treatments. In the heavy thinning treatment, soil bulk density decreased, and soil water holding capacity and porosity increased in the topsoil layers (0-10 cm and 10-20 cm). Total nitrogen, hydrolysable nitrogen, and zinc concentrations increased in the topsoil layers (0-20 cm) in the heavy thinning treatment compared to the control treatment, while the available potassium concentration reduced. The moderate thinning treatment had little effect on the soil physical and chemical properties. Moreover, the variation of SOC fractions was strongly correlated to soil physical and chemical properties. These results suggest that thinning has little effect on the total SOC and its fractions in one rotation of Chinese fir tree in eastern China. In contrast, however, results also suggest that thinning has a positive effect on soil quality, to a certain extent.