以康保全县及其3个自然分区为研究对象,依托3期TM遥感影像数据和DEM数据.在遥感图像处理和地理信息系统技术的支持下,从土地利用/覆被变化总体特征、分区特征、动态变化趋势3个方面,进行了定性和定量分析,明确了1993年以来康保县各种土地利用类型的空间分布格局和数量变化情况.结果表明,16年来耕地大面积减少,但仍为景观基质,林地、草地面积持续增加.北部低山丘陵区以草地面积占优,南部渡状平原区以耕地面积占优,东部缓坡丘陵区耕地、林地、草地面积大体相当.该研究为合理准确分析康保县退耕还林还草情况及环境变化趋势提供了有效的数据支持,同时为政府制定改善康保县生态环境的措施提供有力的决策支持.%Taking Kangbao County and its three natural regions as llie research object, relying on three TM remole sensing image data and DEM data, with remote sensing image processing and geographic information system technology support, a qualitative and quantitative analysis was con ducted from three aspects, the land use/cover change overall characteristic, the district characteristic, the tendency change tendency. It defines the various types of land utilization spatial pattern and quantity dynamic change of Kangbao County since 1993. The results showed thai a large area of cultivated land in 16 years decreased, but still the landscape matrix, woodland and grassland on the rise. Area of the northern hilly region dominated by grassland, wavy plains lo the southern area of cultivated land dominated, hilly area in eastern slope farmland, woodland, grassland area roughly the same. The study results will provide effective dala support for reasonably accurate analysis of returning farmland to forest and pasture and environment variation trend, as well as provide effective decision-making support for Kangbao County government formulate eco - en vironment improving countermeasures.
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