基于遥感指数的石漠化治理成效分析——以湖南省石门县为例  

Analysis on the effectiveness of rocky desertification control based on remote sensing technology

作　　者：侯自航 杨贺 曹丹 靖磊[1] 胡文敏 王忠诚[1] 陈向 Hou Zihang;Yang He;Cao Dan;Jing Lei;Hu Wenmin;Wang Zhongcheng;Chen Xiang(College of Forestry,Central South University of Forestry and Technology,Changsha 410004,China;Hunan Institute of Water Resources and Hydropower Research,Changsha 410007,China)

机构地区：[1]中南林业科技大学林学院,湖南长沙410004 [2]湖南省水利水电科学研究院,湖南长沙410007

出　　处：《湖南文理学院学报（自然科学版）》2021年第2期83-89,共7页Journal of Hunan University of Arts and Science(Science and Technology)

基　　金：国家国防科工局高分辨率对地观测系统重大专项(21-Y30B02-9001-19/22-4)。

摘　　要：石漠化治理成效统计不足造成的成效巩固困难、治理技术针对性不强等问题。以湖南省石门县为研究区,利用研究区2000~2017年的Landsat卫星遥感影像,通过获取该区的INDV、IBS及INDR指数及计算其均值及标准差,综合分析了研究区内的植被、裸岩和裸土情况,并根据研究区林场石漠化的现状特征,对比分析了石门县不同年度的石漠化治理成效。研究结果表明:(1)2000~2017年间石门县植被覆盖度以2009年为节点,呈现出先升后降的趋势;(2)2009年之前石漠化得到了有效控制,但在2009年之后,其石漠化程度有所上升;(3)石门县石漠化区域由斑块式分布逐年转向集中连片式分布,且两处林场的分布变化更为明显。结果显示,石门县斑块化分布的石漠化区域已得到有效治理,但集中连片式石漠化面积有所增大,后期仍需优化治理模式、加大治理力度。结合石门县现有石漠化情况及经济信息,利用遥感手段分析石门县石漠化治理成效,可为当地环境调查及资源利用提供依据,对大区域石漠化治理改善提供参考意义。At present,the control of rocky desertification in China is facing problems such as the difficulty in consolidating the control effect and the lack of pertinence of control technology.The control mode of rocky desertification is in urgent need of transformation.This article selects Shimen County,Hunan Province as the study area,uses Landsat satellite remote sensing images from 2000 to 2017 to obtain the INDV,IBS and INDR indexes of the area,statistically analyzes the mean and standard deviation of the three types of parameters,and comprehensively analyzes the study area.The vegetation,bare rock and bare soil conditions in Shimen County are compared and analyzed in different years of the effects of rocky desertification control.The main results are as follows:(1)The vegetation coverage of Shimen County from 2000 to 2017 taking 2009 as the node shows the trend of rising first,and then falling;(2)Rocky desertification is effectively controlled before 2009,but the control process has slowed down afterwards;(3)The rocky desertification area in Shimen County has changed from patchy to concentrated and continuous.The distribution of the two forest farms has changed more obviously;the patched rocky desertification area in Shimen County has been effectively controlled,but the area of concentrated and contiguous rocky desertification has increased,and the management mode and Increase governance efforts.Combining the existing rocky desertification situation and economic information of Shimen County,using remote sensing to analyze the effectiveness of rocky desertification control can provide a basis for local environmental investigation and resource utilization,and provide reference for the improvement of rocky desertification control in large areas.

关 键 词：石漠化治理 遥感指数 对比分析 Landsat影像 GIS 石门县 

分 类 号：K903[历史地理—人文地理学]