Twumasi Yaw A, Merem Edmund C
Department of Advanced Technologies, Alcorn State University, MS 39096, USA.
Int J Environ Res Public Health. 2008 Mar;5(1):54-67. doi: 10.3390/ijerph5010054.
This paper uses remote sensing and geographic information systems (GIS); and descriptive statistics in the assessment of environmental change along the Savannah River Basin of Georgia. Results of the study show that Savannah River basin side of Georgia has been experiencing environmental change due to several decades of relentless pressure induced by anthropocentric activities and host of other socio-economic factors. Normalized Difference Vegetation Index (NDVI) analysis of the area also shows a decline in vegetation cover. The pace of ecological change showed some variations across time and space. Generally, the results point to a decline in water bodies, vegetation, and increase in population, loss of harvested cropland, farms and increasing threats to the environmental systems of the region.
本文运用遥感和地理信息系统(GIS)以及描述性统计方法,对佐治亚州萨凡纳河流域的环境变化进行评估。研究结果表明,由于几十年来人为活动及一系列其他社会经济因素带来的持续压力,佐治亚州萨凡纳河流域一侧一直在经历环境变化。该地区的归一化植被指数(NDVI)分析也显示植被覆盖度下降。生态变化的速度在时间和空间上呈现出一些差异。总体而言,结果表明水体减少、植被减少、人口增加、收获的农田和农场流失,以及该地区环境系统面临的威胁不断增加。