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遥感技术与应用  2008, Vol. 23 Issue (6): 633-638    DOI: 10.11873/j.issn.1004-0323.2008.6.633
研究与应用     
青海省贵南县土地荒漠化动态变化遥感分析
冯益明1,卢琦2,王学全2,杨恒华3,孙德福3
(1.中国林业科学研究院资源信息研究所,北京100091;2.中国林业科学研究院林业研究所/国家林业局林木培育重点实验室,北京100091;3.青海省沙珠玉治沙站,青海 共和813005)
Land Desertification Dynamic Analysis Based on Remote Sensing inGuinan County of Qinhai Province
FENG Yi-ming1,LU Qi2,WANG Xue-quan2,YANG Heng-hua3,SUN De-fu3
(1.Research Institute of Forest Resource Information Techniques,Chinese Academy ofForestry,Beijing 100091,China;2.Research Institute of Forestry/State Forestry Administration Key Lab for Forest Tree Breeding,Chinese Academy of Forestry,Beijing 100091,China;3.Shazhuyu Sand Control Experimental Station of Qinghai Province,Gonghe 813005,China)
 全文: PDF(680 KB)  
摘要:

利用1976年、1996年、2006年3期遥感影像,在RS与GIS支持下,解译提取贵南县土地荒漠化信息,分析其时空变化。结果表明:① 1976年、1996年与2006年贵南县3期荒漠化土地面积分别占贵南县总土地面积的42.6%、58.6% 和56.8%。30 a来贵南县荒漠化土地面积增加了14.19%,平均每年增加0.47%,土地荒漠化呈总体加剧趋势。② 贵南县土地荒漠化成因主要有风蚀荒漠化、水蚀荒漠化,荒漠化程度以中度和重度为主。③ 由动态度分析得知, 1976年到1996年期间荒漠化严重,尤其是轻度荒漠化发展快,1996年到2006年期间荒漠化形势有所好转。贵南县荒漠化的发生和变化,既有自然因素的作用,又有人类活动的影响。

关键词: 荒漠化动态变化遥感动态度贵南县    
Abstract:

By using three-period (1976,1996,2006) remote sensing images and under the support of RS and GIS techniques,spatial information of land desertification in Guinan county was interpreted and extracted,and the spatio-temporal pattern of desertification information change was analyzed in this paper.The analyzed results indicated that:①The degradation land account for 42.6%、58.6% 、56.8% of the total land area in 1976,1996,2006 respectively in Guinan County,Qinhai Province.In the past 30 years,the desertification land area in Guinan county was increased by 14.19%,with the average annual increase percentage of 0.47%,indicating that the land desertification in Guinan county was aggravated as a whole.②In Guinan county,the main reasons causing land desertification were the erosion derived from wind force and water force,and the main grade of desertification land was moderated grade and severe grade desertification.③During 1976 to 1996,the analysis for dynamic degree showed that the land desertification was severe,especially unimportant grade desertification land area increased fast,and in the period of 1996~2006,the severe land desertification situation began to transfer to good situation.The main reasons causing the generation and development of land desertification of Guinan county included natural factor and human actions.

Key words: Desertification    Dynamic change    Remote sensing    Dynamic degree    Guinan county
收稿日期: 2008-01-25 出版日期: 2011-11-07
:  TP 79  
基金资助:

“十一五”科技支撑课题 (2006BAD26B01);“十五”国家攻关课题(2005BA517A07)资助。

通讯作者: 卢琦(1963-),男,研究员,博士,研究方向为水土保持与荒漠化防治。 E-mail:Luqi@caf.ac.cn。     E-mail: fengym@caf.ac.cn。
作者简介: 冯益明(1971-),男,博士,副研究员,主要从事“3S”技术及其在林业中的应用研究。E-mail:fengym@caf.ac.cn。
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引用本文:

冯益明,卢琦,王学全,杨恒华,孙德福. 青海省贵南县土地荒漠化动态变化遥感分析[J]. 遥感技术与应用, 2008, 23(6): 633-638.

FENG Yi-ming,LU Qi,WANG Xue-quan,YANG Heng-hua,SUN De-fu. Land Desertification Dynamic Analysis Based on Remote Sensing inGuinan County of Qinhai Province. Remote Sensing Technology and Application, 2008, 23(6): 633-638.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2008.6.633        http://www.rsta.ac.cn/CN/Y2008/V23/I6/633

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