论文部分内容阅读
以宜昌城市边缘区2000年、2005年、2010年和2015年遥感数据为基础,参考Costanza和谢高地的生态系统服务价值测算方法,对宜昌城市边缘区生态服务价值变化进行分析;并结合2015年宜昌市边缘区遥感数据,运用FRAGSTAS景观格局分析方法对其内土地景观格局指标进行分析.结果表明:在土地生态效益上,区域内4个时期所能提供的生态服务价值总量均大幅下降,呈恶性发展趋势;在土地利用格局上,区域内土地斑块分散且破碎,斑块面积小.说明交通及工矿用地对林地、草地等生态用地的侵占,导致了边缘区整体景观格局失衡.改善土地利用结构、优化景观格局,是提高宜昌城市边缘区生态价值和人居环境质量的重要保证.
Based on the remote sensing data of Yichang urban fringes in 2000, 2005, 2010 and 2015, with reference to Costanza and Xeige’s estimates of ecosystem services, the paper analyzes the changes of the value of Ecosan services in the urban fringe of Yichang. The remote sensing data of the fringe area of Yichang City were used to analyze the landscape pattern index of the land using the FRAGSTAS landscape pattern analysis method.The results showed that in the ecological benefit of the land, the total value of the ecological service value provided by the four periods in the region dropped sharply, In the pattern of land use, the patches of land in the area are scattered and broken, and the area of patch is small, indicating that the occupying of ecological land such as forest land and grassland by traffic, mining and industrial land leads to the imbalance of the overall landscape pattern in the marginal zone. The land use structure and the optimization of the landscape pattern are important guarantees to improve the ecological value and living environment of the urban fringe of Yichang City.