中国岩溶2011，Vol.30Issue(4)：443-448,6.
亚高山表层岩溶泉域土壤溶蚀速率季节变化及碳汇量估算——以重庆金佛山水房泉流域为例
Seasonal changes of soil dissolution rate and estimations on carbon sequestration in the subalpine epikarst spring zone:A case study in the Shuifang Spring in Jinfoshan, Chongqing
摘要
Abstract
Annual soil dissolution rates of carbonate under forestland, grassland and shrub land at different depth in the Shuifang Spring in Jinfoshan, Chongqing are tested by means of the standard limestone tablets. The results show that the karst erosion rates are quite different under different land-use types, in different seasons and at different depth of soil. Through analysis on soil organic matter, soil CO2 concentration and soil pH during different seasons and at different depth in forestland, grassland and shrub land, it is discovered firstly that the soil organic matter and pH coupled with each other to affect the dissolution rate of carbonate, and the higher the organism and the less the pH value, the higher the dissolution rate. And secondly, the soil CO2 concentration is of certain relations with the dissolution rate of carbonate, and the soil CO2 concentration in summer and autumn is higher than in winter and spring, so, the soil erosion rate in summer and autumn is higher than in winter and spring. Finally, an estimation on the carbon sequestration in the spring area is done by means of standard limestone tablets, the result is about 25. 595 t/a.关键词
表层岩溶泉域/土地利用/溶蚀速率/碳汇估算Key words
epikarst spring area/ land use/ dissolution rate of carbonate/ carbon sequestration estimation分类
天文与地球科学引用本文复制引用
罗健,蒋勇军,胡毅军,李林立,刘文..亚高山表层岩溶泉域土壤溶蚀速率季节变化及碳汇量估算——以重庆金佛山水房泉流域为例[J].中国岩溶,2011,30(4):443-448,6.基金项目
国家自然科学基金(41172331和41040026)、中央高校基本科研业务费支项资金(XDJK201113003)、国土资源部地质调查项目(1212011087119)、国土资源部公益性行业科研专项(201111022)、国土资源部岩溶动力学重点实验室开放课题(KDL2011-01)、西南大学博士基金(SWU109050)、西南大学自然地理博士点开放基金(250-411111) （41172331和41040026）
