基于定量遥感的赣州市中心城区生态地质环境监测与评价

Based on the quantitative RS of ecological geological environment monitoring and evaluation in Ganzhou central urban area

生态地质环境主要包括植被、土壤、地形、岩石圈地质构造等因子,反映了区域的总体环境水平。基于2005年、2010年赣州市中心城区(南康区、章贡区)航空遥感影像资料数据,提取植被覆盖度指数、土壤指数、坡度指数等3个关键生态因子,应用自然生态环境评价模型,分析赣州市中心城区生态地质环境状况。结果显示:研究期间,赣州市中心城区生态地质环境按优、良、中、差等级划分,分别由2005年的253.87 km^2、799.92 km^2、711.73 km^2、341.85 km^2变化为2010年的234.68km^2、780.67 km^2、726.28 km^2、368.28 km^2;优良土地下降幅度为3.6%,中差土地上升幅度为3.8%;由于人类活动的影响,赣州市中心城区的生态地质环境呈恶化趋势。

The ecological and geological environment reflects the overall level of regional environment and mainly includes some factors,such as the vegetation,soil,topography, lithosphere geological structure.Based on the aerial remote sensing image data from the central city of Ganzhou （Nankang district and Zhanggong district） from 2005 to 2010,extracts three key ecological factors：vegetation coverage index, soil index and grade index.Meanwhile,the thesis applies to the natural ecological environment evaluation model and completes the investigation and evaluation process of the ecological and geological environment in Ganzhou central city in order to analyze the change of the ecological and geological environment in Ganzhou.The results showed that during the period of 2005-2010,the ecological and geological environment in Ganzhou central city changes from 253.87 km^2,799.92 km^2,711.73 km^2,341.85 km^2 in 2005 to 234.68 km^2,780.67 km^2,726.28 km^2,368.28 km^2 in 2010 according to the excellent, middle and poor.The change range of the excellent land fell 3.6%,but the variation range of middle and poor land was increased by 3.8%.The data showed that the ecological and geological environment in Ganzhou central city was deteriorated during the period of 2005-2010.