文献类型：期刊文献

英文题名：Variation of soil organic carbon and land use in a dry valley in Sichuan province, Southwestern China

作者：Liu, Shiliang[1] Dong, Yuhong[2] Cheng, Fangyan[1] Yin, Yijie[1] Zhang, Yueqiu[1]

第一作者：Liu, Shiliang

通信作者：Liu, SL[1];Dong, YH[2]

机构：[1]Beijing Normal Univ, State Key Lab Water Environm Simulat, Sch Environm, 19 Xinjiekouwai St, Beijing 100875, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry, Beijing 100091, Peoples R China

年份：2016

卷号：95

起止页码：501-504

外文期刊名：ECOLOGICAL ENGINEERING

收录：;EI(收录号：20162902594144);Scopus(收录号：2-s2.0-84978975663);WOS:【SCI-EXPANDED(收录号:WOS:000385371400058)】；

基金：This research was sponsored by National Key Research and Development Project (No. 2016YFC0502103) and National Natural Sciences Foundation of China (No. 41571173).

语种：英文

外文关键词：Dry valley; Land use; Soil carbon; Restoration; Reforestation

摘要：In dry valleys in southwestern China, soil organic carbon (SOC) storage is very sensitive due to changes in land use. Characterizing SOC content variations is key to improving SOC sequestration and future land management. This study evaluated land-use changes, especially reforestation, and the effects on SOC variability in a small dry watershed in the Minjiang river valley. Multivariate methods indicate that the SOC content was affected by land uses and topographical features, including elevation, slope position, and gradient. SOC content for shrubland was significantly higher than for other land use. Reforestation greatly improves SOC content and a positive relationship was found between SOC content and the number of reforestation years. Forest restoration and shrubland restoration from farm land would increase the soil carbon storage level by 6% and 8%, respectively. Our results suggest that natural shrub restoration and plantation management are effective ways for improving soil carbon sequestration in dry valleys. (C) 2016 Elsevier B.V. All rights reserved.