基于遥感数据的郑州市植被覆盖度变化研究

植被覆盖度是衡量某一地区植被覆盖状况的指标,某一地区的植被覆盖状况会直接影响到该地区的土壤、水分和气候等自然环境要素。随着中原经济区的快速发展,郑州市作为中原经济区的增长极,发展速度很快,城市扩张迅速。为了研究郑州市的快速发展给生态环境带来的影响,选取植被覆盖度这一指标为研究对象,利用不同时间阶段的遥感影像估算郑州市不同时期的植被覆盖度,通过分析植被覆盖度变化来研究郑州市的快速增长对植被覆盖度造成的影响。结论如下:(1)2000年郑州市的植被覆盖度主要以低植被覆盖为主,2014年以中低植被覆盖度为主,高植被和较高植被覆盖度略有提高;(2)从植被覆盖度变化来看,2000—2014年整个研究区植被覆盖度主要以轻微增加为主。

Study on the Change of Vegetation Coverage in Zhengzhou City Based on Remote Sensing Data

Vegetation fraction is an index to measure the vegetation coverage in a certain area.The vegetation coverage in a certain area will directly affect the natural environmental factors such as soil,water and climate in this area.With the rapid development of the Central Plains Economic Zone,Zhengzhou,as the growth pole of the Central Plains Economic Zone,develops rapidly and expands rapidly.In order to study the impact of the rapid development of Zhengzhou on the ecological environment,this paper chooses the vegetation coverage index as the research object,estimates the vegetation coverage of Zhengzhou in different periods by using remote sensing images of different time stages,and studies the impact of the rapid growth of Zhengzhou on vegetation coverage by analyzing the change of vegetation coverage.The conclusions are as follows:(1)In 2000,the vegetation coverage in Zhengzhou was mainly low vegetation coverage,in 2014,medium and low vegetation coverage,while the high and higher vegetation coverage increased slightly;(2)From the change of vegetation coverage,the vegetation coverage in the whole study area was mainly slightly increased in 2000—2014.