Study on the Factors Affecting the Vegetation Distribution in Zhangjiakou Area Based on Remote Sensing Image Data of Gaofen-1 Satellite
This study is based on the remote sensing image data of Gaofen-1 satellite and conducts a deep analysis of the vegetation distribution pattern in Zhangjiakou area,and explores its relationship with water resources.Normalization formula was used to calculate vegetation coverage,and cluster autocorrelation analysis was used to reveal the spatial positive correlation of vegetation distribution.Combining rainfall data and 2 046 measured groundwater depths in Zhangjiakou area,the relationship between vegetation coverage,vegetation distribution,rainfall,and groundwater depth was explored using GIS spatial analysis method.The results show that the vegetation coverage in Zhangjiakou area is significantly positively correlated with rainfall,with a correlation coefficient as high as 0.88;the relationship curve between groundwater and vegetation coverage shows a bimodal pattern,reaching its peak at groundwater depths of 7.1 m and 12.7 m;when the groundwater level is buried within the range of 4～8 m,the distribution area of various vegetation types significantly increases.
vegetation coverage rateburial depth of groundwater levelland use typerelated relationships
万方数据
维普
