基于Google Earth的果化示范区石漠化评估

杨奇勇; 蒋忠诚; 李晖; 肖土安

doi:10.3969/j.issn.1001-4810.2013.01.014

基于Google Earth的果化示范区石漠化评估

doi: 10.3969/j.issn.1001-4810.2013.01.014

1.
中国地质科学院岩溶地质研究所/国土资源部、广西壮族自治区岩溶动力学重点实验室
2.
中国地质科学院岩溶地质研究所/国土资源部、广西壮族自治区岩溶动力学重点实验室；广西师范大学环境与资源学院

基金项目: 广西自然科学基金(2012GXNSFAA053186)、中国地质科学院岩溶地质研究所所控项目(2012015)、西南岩溶石漠化遥感调查与地面监测(1212011220958)

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出版历程
- 收稿日期: 2012-07-12
- 发布日期: 2013-03-25

Assessment of karst rocky desertification based on Google Earth in the Guohua ecologic demonstration plot

1.
Institute of Karst Geology, CAGS/Karst Dynamics Laboratory,MLR & GZAR
2.
Institute of Karst Geology, CAGS/Karst Dynamics Laboratory,MLR & GZAR；College of environment and resource, Guangxi Normal University

摘要

摘要: 充分挖掘Google Earth(GE)提供的免费数据,可以克服数据缺乏区域无图可用的困难。以典型峰丛洼地果化示范区为例,基于GE和GIS技术,建立了果化示范区数字高程模型。利用植被覆盖度和坡度两个指标对研究区域2003年石漠化进行定量评估。结果表明,2003年示范区石漠化面积为5.63km2,比重高达64.7%;研究区域以轻度石漠化为主,轻度石漠化面积为3.92km2。
- Google Earth /
- GIS /
- 岩溶区 /
- 石漠化 /
- 广西平果县
Abstract: Fully mining the free data provided by Google Earth (GE) can effectively compensate for the lack of data available in the study area. Based on GE and GIS technology, the digital elevation model in a typical peak cluster depression area the Guohua ecologic demonstration plot is established in the paper. The rocky desertification in the study area in 2003 years has been assessed with two indicators, the vegetation cover and the slope gradient. The results show that the area of the rocky desertification zone is 5.63 km2 which accounts for up to 64.75 % of all the area. Slight rocky desertification，covering an area of 3.92 km2, is the major rocky desertification type.
- Google Earth /
- GIS /
- karst area /
- rocky desertification /
- Pingguo County of Guangxi

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