科尔沁右翼中旗土地利用变化及其生态环境效应

基于2000、2005年间的土地利用图形数据，选用生态意义较明确的景观特征指数，定量分析了科尔沁右翼中旗的景观空间格局，揭示了研究区的土地利用变化及其生态环境效应．结果表明：（1）2000年，草地景观是研究区面积最大、分布最广、连续性最强的基质景观，区域生态环境指数为0．52．（2）2005年，草地景观仍然是研究区的基质景观，区域生态环境指数为0．50．（3）2000—2005年，在研究区的所有景观中，耕地、城乡用地和水域面积比例有所增加．

The Area Changes of Land Use Right-Wing Central and Ecological Environment Effect of Banner of Kerqin Region

Basing on the sketch date of land use in the year of 2000 and 2005, using the more explicit landscape metrics we quantify and analyze the landscape spatial pattern in the Right-Wing Central Banner of Kerqin Region and in term of regions and banners to reflect the affect of landscape pattern on land use change and regional ecoenvironmental. The result shows： （1）In the year of 2000, grassland landscape is the biggest in area, the most extensive in distribution,and the strongest in consecution substrate landscape in the Right-Wing Central Banner of Kerqin Region. The eco-environmental index in the researching are is 0.52. （2） In the year of 2005, grassland landscape is also landscape in the researching are. The eco-environmental index in all the researching are is 0. 50. （3） In the searching area from 2000 to 2005, the area proportions of plow,urban areas and water areas are increased.