[1]王晓燕,徐志高.西藏荒漠化动态变化研究[J].水土保持研究,2007,14(06):47-50.
　WANG Xiao-yan,XU Zhi-gao.Study on the Dynamic Changes of Desertification in Tibet[J].Research of Soil and Water Conservation,2007,14(06):47-50.
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西藏荒漠化动态变化研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 14 期数: 2007年06期 页码: 47-50 栏目: 出版日期: 1900-01-01
Title:
Study on the Dynamic Changes of Desertification in Tibet
作者:
王晓燕1, 徐志高2
1. 长沙理工大学 建筑系, 长沙 410076;
2. 国家林业局 中南林业调查规划设计院, 长沙 410014
Author(s):
WANG Xiao-yan1, XU Zhi-gao2
1. Department of Architecture, Changsha University of Science and Technology, Changsha 410076, China;
2. State Forestry Administration, Central South Forest Investigating and Planning Institute, Changsha 410014, China
关键词:
荒漠化; 动态变化; 气候变化; 人为因素; 西藏
Keywords:
desertification; dynamic change; climatic change; man-made factor; Tibet
分类号:
S288
摘要:
西藏是青藏高原主体，也是环境敏感和荒漠化比较严重的区域之一。掌握西藏荒漠化的动态变化对于该区荒漠化治理规划的制定和实现国土资源的可持续利用具有重要意义。利用西藏的两期荒漠化监测数据进行了对比分析研究。结果表明，与1999年相比，目前西藏荒漠化总体上呈恶化趋势，但局部得到逆转。1999-2004年的5 a间，西藏荒漠化面积增加6.47万hm2；荒漠化程度有加重趋势，表现为轻度荒漠化、重度荒漠化和极重度荒漠化面积分别减少8.26%，1.78%和0.41%，而中度荒漠化面积增加10.45%；荒漠化空间分布发生了一定的变化，干旱区荒漠化面积减少11.17万hm2，而半干旱区和亚湿润干旱区的荒漠化呈一定的扩展趋势（未统计冻融荒漠化土地），其中阿里、日喀则地区荒漠化面积扩大，其他区的荒漠化面积则有不同程度的减少。气候暖化和降水变化是西藏荒漠化变化的主要原因，但人为因素对西藏荒漠化的发展起了一定的促进和缓解作用。
Abstract:
Tibet is the main body of Qingzang Plateau.It is also an environmentally sensitive area and one of the regions in which there is serious desertification in China.To grasp the dynamic change of desertification in Tibet is very important to make controlling plan and achieve sustainable use of land resource.Using the monitoring data of different times, the dynamic changes of desertification in Tiabet was analyzed and studied.The result showed that compared with the data in 1999, there is a general tendency of aggravation of desertification in 2004, but the desertification condition takes a favorable turn in local area.During five years from 1999 to 2004, the desertified area is expanded for 64 725.1 hm2.The desertification degree becomes more serious which shows that slight degree and severe degree and very severe degree desertified land area reduce 8.26%, 1.78% and 0.41% respectively, but moderate degree desertification land area adds 10.45%.The spatial distribution of desertified land takes certain change.The desertified land area diminishes for 111 677.7 hm2 in dry area while it is enlarged in semi-dry area and simi-humid area.The desertified land is expanded in Ali district and Rikaze district, while there exits different degree of diminution in the other area in Tibet.The main reason of the dynamic changes of desertification in Tibet is the climate changing, and factitious factors make contribution to it together.

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备注/Memo

收稿日期:2007-2-3。
基金项目:全国第三次沙化与荒漠化监测项目
作者简介:王晓燕（1973- ），女，湖南邵阳人，副教授，博士，主要从事环境演变研究。

更新日期/Last Update: 1900-01-01