摘要
为摸清湖南省沙化土地的成因、状况、程度、危害和发展动态,本文采用GPS、RS、GIS等技术调查分析了湖南省2014年的沙化土地现状和治理情况,并与2009年调查结果相比对,分析了监测间隔期内沙化土地的动态变化情况及演变趋势。结果显示:湖南省沙化土地总面积58 716.32 hm^2,沙化类型以固定沙地为主,利用类型以草地和林地为主。通过有效治理,五年来沙化土地面积减少59.88 hm^2,固定沙地、中度沙化土地面积增加,半固定沙地、流动沙地以及重度、极重度沙化土地面积均大幅度减少。局部地区沙化土地面积仍在扩展,防沙治沙工作还须继续加强。
In order to understand the causes,status, degree, harm and development of desertification land in Hunan Province,using the GPS,RS and GIS methods to statistic sandification monitoring data of 2009 and 2014,and analyze the dynamic changes and evolution trends of desertified land during the monitoring interval. The monitoring results show that the total area of desertified land of Hunan Province is 58 716. 32 hm2, and desertification is dominated by fixed desertification land, mainly grassland and woodland. Through effective management,the desertification land area has been reduced by 59. 88 hm2 in the past five years. The area of fixed desertification land and moderate desertification land has increased, the area of semi fixed desertification land,mobile desertification land and severe and severe desertification land have been greatly reduced. The area of desertified land is still expanding in some areas, and corresponding countermeasures and suggestions were put forward for desertification prevention work in the future.
作者
汪丽
WANG Li(Hunan Prospecting Designing ＆ Research General Instifute for Forestry, Changsha 410007, Chin)
出处
《湖南林业科技》
2018年第4期54-60,共7页
Hunan Forestry Science & Technology
基金
湖南省第五次沙化土地监测(工程号:2014L-323)
国家林业科学数据平台"湖南省林业科学数据建设与运行服务"(2005DKA32200-12)
关键词
沙化土地
动态变化
湖南省
desertification land
dynamic changes
Hunan Province
作者简介
汪丽（1987-），女，安徽省宿州市人，工程师，硕士研究生，主要从事森林资源、湿地及石漠化监测等工作；E—mail：303061228@qq．com.
