农林交错带植被覆盖度与地表温度的相关性分析  

Correlation Analysis Between Fractional Vegetation Coverage and Land Surface Temperature in Agroforestry Ecotone

作　　者：刘宣 韩芳[2] 马霜霜 王宇宸 LIU Xuan;HAN Fang;MA Shuangshuang;WANG Yucheng(Chifeng Meteorological Bureau,Chifeng 024000,China;Inner Mongolia Ecological and Agricultural Meteorological Center,Huhhot 010051,China;Xilingol League Meteorological Bureau,Xilingol League 026000,China)

机构地区：[1]内蒙古自治区赤峰市气象局,内蒙古赤峰024000 [2]内蒙古自治区生态与农业气象中心,内蒙古呼和浩特010051 [3]内蒙古自治区锡林郭勒盟气象局,内蒙古锡林郭勒026000

出　　处：《地理空间信息》2024年第3期99-103,共5页Geospatial Information

基　　金：内蒙古自治区科技计划资助项目(2021GG0392);内蒙古自治区自然科学基金资助项目(2021MS03069)。

摘　　要：以内蒙古赤峰市喀喇沁旗为研究区,基于2000—2019年8期Landsat影像,利用空间分析、线性回归和空间自相关3种方法,在4类土地覆被上分析植被覆盖度(FVC)与地表温度(LST)的时空变化及其相关性。结果表明:(1)近19 a来,喀喇沁旗FVC呈西南向东北递减的趋势,而LST空间分布与FVC相反,呈西南低东北高的趋势;(2)FVC与LST整体表现为负相关,在空间相关性与线性回归中,农田的相关性强于林地,而空间自相关中林地强于农田;(3)与农田、建筑、草地相比,林地的FVC能有效降低LST,FVC≥0.75时,对LST影响最明显。Based on the eight Landsat images from 2000 to 2019,we used the spatial analysis,linear regression and spatial autocorrelation methods to analyze the spatio-temporal variation and correlation between fractional vegetation coverage(FVC)and land surface temperature(LST)on four different types of land cover in Harqin Banner,Chifeng,Inner Mongolia.The results show that①in the past 19 years,the FVC of Harqin Banner decreases from southwest to northeast,on the contrary,the spatial distribution of LST is lower in southwest and higher in northeast.②There is a negative correlation between FVC and LST.In the spatial correlation and linear regression,the correlation of farmland is stronger than forest,while the spatial autocorrelation of forest is stronger than farmland.③Compared with farmland,construction land and grass,FVC of forest can effectively reduce LST.When FVC is more than 0.75,it has the most obvious effect on LST.

关 键 词：农林交错带 FVC LST 相关分析 

分 类 号：P237[天文地球—摄影测量与遥感]