水土保持学报2012，Vol.26Issue(6)：171-174,179,5.
湘西南石漠化地区不同植被恢复模式的土壤有机碳研究
Soil Organic Carbon Changes in Different Vegetation Restoration Types of Rocky Desertification in Southwestern Hunan,China
摘要
Abstract
In order to understand the soil carbon sequestration in vegetation restoration of rock desertification, the concentration, distribution and storage of soil organic carbon(SOC) were investigated in five forest types in rocky desertification areas in southwestern Hunan of China. The five vegetation restoration types included.. Platycladus orientalis ( Linn. ) Franco pure forests (POPF), Platycladus orientalis ( Linn. ) Franco and Liquidamba formosana Hance mixed forests(PLMF), Pinus elliottii and Liquidarnba J'ormosana Hance mixed forests(PeLMF), Koelreuteria paniculata Laxm pure forests(KLPF), and forest reservation(FR). The results showed that, (1)The rank of SOC concentration decreased in the five forest types as: KLPF FR 〉POPF 〉PLMF 〉PeLMF. The SOC concentration declined with the increase of the depth of soils, and was significantly different between the soils in the five forests. (2)The SOC content increased with aging stands, and the increased SOC content occurred particularly at the top of soil systems. (3) The storage of SOC varied with different slope positions in a mountain forests and increased in an order: Bottom places middle places 〉top places. (4)The density of SOC ranged from 54.22 t/hm2 to 96.52 t/hm2 , of which about 55.95% was found at the top soil layer(0-15 cm). The SOC storage differed significantly in the five forest types and decreased with soil depth increased.关键词
石漠化/邵阳县/土壤有机碳/植被恢复Key words
rocky desertification/Shaoyang county/soil organic carbon/vegetation restoration分类
农业科技引用本文复制引用
徐杰,邓湘雯,方晰,黄小健,刘豪健,彭长辉..湘西南石漠化地区不同植被恢复模式的土壤有机碳研究[J].水土保持学报,2012,26(6):171-174,179,5.基金项目
国家林业局石漠化定位监测项目 （）
国家林业局推广项目 （）
湖南省“芙蓉学者计划”项目 （）
中南林业科技大学引进高层次人才科研启动基金项目 （）
