中文摘要：

采用样方法和土地利用转移矩阵，以贵州省西南部的晴隆县为研究区域，研究了典型喀斯特峡谷区不同土地利用类型在1988、1999和2009年的碳储量空间格局和演变过程，并由此估算了贵州省喀斯特峡谷区的碳储量及贡献率。结果表明：晴隆县喀斯特区域的碳储量和平均碳密度呈先减少后增加的趋势。由晴隆县不同情况下的碳储量比例关系，估算出贵州省喀斯特峡谷区碳储量的实际值为42．55Tg。同时，研究结果表明人类活动对碳储量的空间格局和演变有很大的影响。此外，估算的贵州省喀斯特峡谷区生态系统的平均碳密度远高于中国陆地生态系统的平均值，土壤平均碳密度则接近全国陆地生态系统平均值，但其植被平均碳密度却远高于全国陆地生态系统平均值，与全国森林系统的植被平均碳密度持平。这说明喀斯特峡谷区具有极大的固碳潜力，对其进行石漠化防治，是极其必要的。

英文摘要：

Qinglong County in Guizhou, China is a typical karst canyon area. Using quadrat methods and a land use transfer matrix we studied the carbon storage spatial distribution pattern and evolution process over three independent periods （1988, 1999 and 2009） in this area. Based on the results we estimated the carbon pool capacity of the entire karst canyon area in Guizhou and contribution ratios. Carbon storage and average carbon density of the karst area in Qinglong decreased at first, and then increased over the sampling period. The actual carbon storage of the karst canyon area in Guizhou was estimated to be 42.55 Tg. The average carbon intensity of the karst canyon area in Guizhou is far higher than that of national terrestrial ecosystems, especially in vegetation areas. Through cross comparison, we found that karst canyon areas have great carbon sequestration potential and we suggest that it is necessary to control and prevent rocky desertification in karst areas in China.