On Quantifying the Ecological Effects of Land Use/Cover Changes in Red Soil Erosion Area on Integrated Geo-spatial Information Techniques:A Case Study in Changting County, Fujian
Based on the integrated geo-spatial information techniques, through the interpretation of the remote sensing images in 1988, 2000 and 2007, the land use/cover changes (LUCC) data in Changting county were acquired, and the variations in environment effect in response to LUCC were studied by the calculation of ecosystem services value in the typical red soil erosion area. The results indicated: from 1988 to 2007, orchard in the study region had been increasing, and the integrated dynamic degree of LUCC was up to 4.22 and 5.71 ??respectively in the two periods, which means the transition speed of land is accelerated. Ecosystem services values in the three years were 85.27×108 ?? 87.64×108 and 86.16×108yuan respectively, with a trend of up-and-then-down fluctuation. Over all, forest land made the greatest contributions to the value. Finally the land use pattern of the study region in 2015 was predicted by means of the Markov model, and the ecosystem services value in 2015 will been decreased to 85.20×108yuan, which is mainly caused by the decrement of forest land and the increase of construction land. So if the economic benefits of land use are overemphasized, the sustainability of the ecological vulnerable area will be faced with severe ecological risks.
Land use/cover changes(Lucc) ecological effect ecological service value Markov model changting county
Huihua Lin Guosheng Wu Hejian Zhu
College of Geographical Sciences, Fujian Normal University,China
国际会议
福州
英文
582-587
2011-06-29（万方平台首次上网日期，不代表论文的发表时间）