贵州省大方县人类活动对土地利用的影响

基于分区—分层—分波段方法,对贵州省大方县1988年、2001年、2009年三期TM影像进行土地利用类型分类,并对其时空变化规律进行分析。结果表明：三个时间段内耕地既有扩张也有缩减,但总体面积减少,减少幅度为33%;林地扩张范围大于退缩范围,总体面积增加,增加幅度为34%;草地面积先减少后增加,空间格局变化剧烈,总体减幅为11%;建设用地数量上持续扩张,增幅比例最大,增幅达715%。总体而言,人类活动是影响大方县土地利用数量和空间格局变化的主要原因,海拔和坡度等自然因素对耕地、林地的扩张和退缩有明显影响。...

Full description

Saved in:
Bibliographic Details
Published in中国岩溶 Vol. 36; no. 4; pp. 470 - 477
Main Author 黄晓云 王静爱 尹卫霞 李富华 张春琴
Format Journal Article
LanguageChinese
Published 北京师范大学区域地理研究实验室,北京100875 2017
北京师范大学地理科学学部,北京100875
贵州大学经济学院,贵阳550025
北京师范大学区域地理研究实验室,北京100875%北京师范大学地理科学学部,北京100875
Subjects
人类活动
土地利用
大方县
石漠化
Dafang county
land use
人类活动
rocky desertification
大方县
石漠化
土地利用
human activity
Online AccessGet full text
ISSN1001-4810
DOI10.11932/karst20170407

Cover

More Information
Summary:基于分区—分层—分波段方法,对贵州省大方县1988年、2001年、2009年三期TM影像进行土地利用类型分类,并对其时空变化规律进行分析。结果表明：三个时间段内耕地既有扩张也有缩减,但总体面积减少,减少幅度为33%;林地扩张范围大于退缩范围,总体面积增加,增加幅度为34%;草地面积先减少后增加,空间格局变化剧烈,总体减幅为11%;建设用地数量上持续扩张,增幅比例最大,增幅达715%。总体而言,人类活动是影响大方县土地利用数量和空间格局变化的主要原因,海拔和坡度等自然因素对耕地、林地的扩张和退缩有明显影响。
Bibliography:land use, human activity, rocky desertification, Dafang county
45-1157/P
Under the background of climate change,it has important significance to study the temporal and spatial changes of land use in ecologically vulnerable areas,which also can reveal the regularity of land use change and influence of human activities.Rocky desertification disaster in the main forms of water loss and soil erosion badly threats land ecological security in karst areas of South China.Dafang county is located in the northwest of Guizhou Province,China,which is one of the most serious areas of rocky desertification,whether in total area or degree of rocky desertification.In this study,Dafang county was chosen as the research area.We study temporal and spatial variations of regional land use in order to provide reference for land use structure optimization and land management in karst areas.In this work,the land use classification of TM images in 1988,2001 and 2009in Guizhou Province is carried out using the method of partition-layere
ISSN:1001-4810
DOI:10.11932/karst20170407