生态学杂志2012，Vol.31Issue(11)：2742-2747,6.
三峡库区典型流域退耕地植物种类及凋落物对土壤有机碳固定的影响
Effects of plant species and litter on soil organic carbon sequestration in converted croplands in a typical watershed in Three Gorges Reservoir area of China
摘要
Abstract
In order to understand the effects of plant species and litter on the soil organic carbon sequestration and translocation in converted croplands in a typical watershed in Three Georges Reservoir area, a field experiment was conducted. Three treatments including C3 plant ( Al ) and C4 plant Rhizoma cyperi with litter removal (B0) versus with double litter input (B2) were installed in 2008, and soil and plant samples were collected in 2010, with the organic carbon concentration and 5 G value in soil profiles measured. A changed organic carbon concentration in the soil profiles was observed due to the land use change. After 2 years conversion, the organic carbon concentration in 0-30 cm soil layer in Al had an increase of 58.4 g C · m-2 (1. 1% ) , that in B0 had a distinct increase of 303. 3 g C · m-2(4. 9% ) , while that in B2 was decreased by 79 g C · m-2 (1. 1% ). Litter input had significant effects on the soil organic carbon density (P＜0. 05).关键词
三峡库区/退耕地/土壤有机碳/碳固定Key words
Three Gorges Reservoir area/ converted cropland/ soil organic carbon/ carbon sequestration分类
资源环境引用本文复制引用
田耀武,黄志霖,肖文发..三峡库区典型流域退耕地植物种类及凋落物对土壤有机碳固定的影响[J].生态学杂志,2012,31(11):2742-2747,6.基金项目
"十二五"国家科技支撑计划项目(2011BAD38B04)和河南科技大学博士科研基金项目(09001445)资助. （2011BAD38B04）
