摘要
基于遥感数据,以线性回归方法分析广西2006~2017年间植被NDVI(normalized difference vegetation index)变化趋势,探讨植被变化特征。主要结论有:(1)广西植被覆盖状况良好,植被NDVI呈上升趋势;高植被覆盖面积最多,低植被覆盖面积最少;阔叶林、针叶林植被覆盖高。(2)广西植被大部分呈稳定状态,极少数地区变异剧烈;百色市植被处于非常稳定状态的面积最多,南宁市植被变异剧烈的面积最多。(3)针叶林、阔叶林、灌丛和草丛的植被NDVI呈轻度增加,栽培植物基本不变。(4)2007~2016年广西植被NDVI整体上增加的面积大于减少的。植被基本不变主要在崇左及贺州的西部区域;植被轻度减少分布在左江沿岸、右江沿岸;植被轻度增加分布在河池地区;植被显著增加分布在南宁以及钦州部分地区;植被显著减少的面积极少。
Based on remote sensing data,a linear regression method was used to analyze the vegetation change trend from 2007 to 2016 in Guangxi,to explore the vegetation change.The results showed these as follows.①The vegetation coverage of Guangxi was in good condition and NDVI is on the rise,high vegetation coverage district area is the most and low vegetation coverage district area is the least,broadleaf forests and coniferous forests vegetation coverage is higher.②Most vegetation in stable state of Guangxi,a few areas changed a lot.The biggest area of extremely stable in Baise and the biggest area of variation severe in Nanning.③Broadleaf forests,Coniferous forests,Grassland and Shrub vegetation coverage showed a slight increasing trend,Cultural vegetation showed a essentially unchanged.④The vegetation coverage area of the increase is greater than the decrease in Guangxi.
作者
熊小菊
廖春贵
胡宝清
XIONG Xiao-ju;LIAO Chun-gui;HU Bao-qing(Key Laboratory of Environment Change and Resources Use in Beibu Gulf,Ministry of Education,Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation,School of Geography and Planning in Guangxi Teachers Education University,Nanning 530001,China)
出处
《科学技术与工程》
北大核心
2018年第11期123-128,共6页
Science Technology and Engineering
基金
国家重点研发计划(2016YFC0502401)、国家自然科学基金(21661021)、广西自然科学基金创新团队项目(2016JJF15001)和广西师范学院大学生创新创业大赛区级项目(201710603260)资助
关键词
广西
NDVI
变化趋势
相关分析
Guangxi
NDVI
change tendency
correlation analysis
