尼泊尔加德满都地区土地覆盖变化评价

Bimala Lama, Basanti Kumpakha
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引用次数: 0

摘要

了解土地覆盖变化对于管理和监测自然资源和发展,特别是城市规划是必要的。遥感和地理信息系统(GIS)是评估土地利用和土地覆盖变化的行之有效的工具,有助于规划者促进可持续性。在这项研究中使用谷歌地球引擎来检测尼泊尔一个快速发展的城市的土地覆盖变化。研究发现,2013 - 2019年,森林面积增加0.26%,聚落面积增加3.28%,湿地面积增加0.015%,其他土地面积增加1.21%。2013年土地覆盖变化研究总体精度为80%,kappa系数为0.74,2019年土地覆盖变化研究总体精度为83.33%,kappa系数为0.78。地震前后加德满都地区土地覆盖变化状况显示,2013年和2019年,森林覆盖面积最高,农田次之,居民点次之。森林、聚落、湿地和其他土地分别增加了0.26%、4.54%、0.015%和1.21%。耕地和草地面积分别减少3.28%和0.22%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessment of Landcover Change of Kathmandu District, Nepal
It is necessary to understand land cover changes for managing and monitoring natural resources and development, especially urban planning. Remote sensing and geographical information systems (GIS) are proven tools for assessing land use and land cover changes, which helps planners advance sustainability. Google Earth Engine is used in this study to detect land cover changes in one of the rapidly growing cities in Nepal. It was discovered that from 2013 to 2019, 0.26% of the total area was increased by forests, 3.28% by settlement, 0.015% by wetland, and 1.21% by otherland. The overall accuracy and kappa coefficient of the landcover change study for 2013 are 80% and 0.74, and the overall accuracy and kappa coefficient of the study of landcover change for 2019 are 83.33% and 0.78. The status of the landcover change in Kathmandu district before and after the earthquake showed that forest covers the highest area, followed by cropland, and then settlement in both years 2013 and 2019. Forest, settlement, wetland, and other land have increased by 0.26%, 4.54%, 0.015%, and 1.21%, respectively. However, cropland and grassland have been decreased by 3.28% and 0.22% respectively.
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