土地利用/土地理被变化是全球变化研究的重点，是影响陆地碳循环的一个重要因子。该文对黄河 三角洲河口地区1992年和1996年，月份的爪影像进行非监份分类，做出该地区土地搜被类型分布图，以及 估算土地硬被类型的变化面积，计算结果显示1992年该研究地区植被碳库和土壤碳库分别为11.43×105t和 7.24×106t,而1996年林地面积增加了146.76×102hm2。使用已经公开发表的植被和土壤碳储存数据估算，黄 河三角洲河口地区植被碳储量增加7.43×102表明在不考虑土地夜被变化对土坡有机碳的影响下，研究区 是一个小净碳汇区

Land cover change is a important efect on carbon cycle.In order to estimate changes in carbon pools and fluxes to the atmospheer,we used Landsat TM data of 1992 and 1996 to calculate the extent of difeernt land cover types and their change to each other in the estuary area of Yelow River delta. Image processing and unsupervised classification allowed the production of accurate land cover maps of 1992 and 1996, and then the changes were detected. Estimation of carbon pools and fluxes to the atmosphere was carried out using the results of landsat image analysis and published data about carbon stocks in vegetation and soil.The results showed that the vegetation carbon reserves was 11.43x105t,the soil carbon reserves was7.24x106t in 1992,while the area of foerst increased 146.76x102hm2,and the vegetation carbon reserves increased 7.43x105t during the four years from 1992 to 1996. So the land cover change lead to an increasing in carbon reserves in this area.It is a carbon pools in the global change Progress.