中国岩溶2011，Vol.30Issue(2)：175-180,6.
岩溶山区土地利用方式对土壤活性有机碳及其分布的影响
Impact of land use type on soil active organic carbon and its distribution in karst mountain
摘要
Abstract
Soil active organic carbon and its distribution in the soils (0～50 cm) under different land use type are studied in Zhdng Liang knoll, Chongqing. The results reveal that: Dthe contents of the soil organic carbon (SOC) under different land use types are bamboo land ＞vegetable land ＞grassland ＞woodland ＞gar-den ＞abandoned farmland, and the contents of SOC in the layer between 20 to 50 cm deep is more than that between 0 to 20 cm; 2) the average contents of soil dissolved organic carbon (DOC) are woodland ＞ bamboo land ＞abandoned farmland ＞grassland ＞garden ＞vegetable land; 3) the percentage of soil dissolved organic carbon to the total soil organic carbon increased with depth; 4) the easily oxidized organic carbon(EOC) content and its distribution on the profile is consistent with the changes of soil organic carbon content. Correlation analysis shows that the correlation between easily oxidized organic carbon and soil organic carbon gets very significant level (R=0.852,P＜0. 000 1), proving that the EOC is susceptible to the change of SOC.关键词
岩溶区/土地利用方式/土壤有机碳/土壤活性有机碳/土壤溶解性有机碳/土壤易氧化有机碳Key words
karst area/ land use type/ soil organic carbon/ soil active organic carbon/ soil dissolved organic carbon/ soil easily oxidized organic carbon分类
农业科技引用本文复制引用
蓝家程,傅瓦利,袁波,彭景涛,张婷,付允..岩溶山区土地利用方式对土壤活性有机碳及其分布的影响[J].中国岩溶,2011,30(2):175-180,6.基金项目
重庆市移民局课题(200909)、重庆市自然科学基金(40701179) （200909）
