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当前位置: 首页 > 文章 > 青藏高原高寒沙区景观格局变化分析——以青海贵南县为例 林业科学研究 2008,21 (2) 182-187
Position: Home > Articles > Dynamics Analysis on Landscape Pattern of Alpine-cold Desertified Area in the Qinhai-Tibetan Plateau:A Case Study in Guinan County,Qinghai Province Forest Research 2008,21 (2) 182-187

青藏高原高寒沙区景观格局变化分析——以青海贵南县为例

作  者：
冯益明;吴波;卢琦;王学全;杨恒华;孙德福
单  位：
青海省沙珠玉治沙站;中国林业科学研究院资源信息研究所国家林业局林业遥感与信息技术实验室;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
关键词：
景观格局;景观动态;遥感;高寒沙区
摘  要：
运用遥感和GIS技术,对青海省贵南县3个时期土地利用变化的景观格局进行了分析和预测。结果表明:(1)贵南县大的地貌特征是以草地为基本景观基质,在广布的草地基质中,又大量分布荒漠(如干沟、沙地等)景观。20世纪70年代的景观受人为干扰相对较少,20世纪90年代以后,人为对景观的干扰力度增大;(2)1976年,景观斑块类型间优势度差异显著,景观破碎化指数小,多样性低;1996年以后,斑块格局发生了明显变化,景观趋于复杂;(3)30年来,贵南县景观要素中草地、耕地、林地、建筑用地、以及未利用地向其他类型转化的速度总体呈加速状态。在1976—1996年期间,大面积草地被开垦为耕地;在1996—2006年期间,生态环境的保护与破坏共存。另外,大面积的未利用地向其他景观类型转移数量很少,贵南县生态环境综合治理任重道远。(4)贵南县2016年景观格局预测显示:到2016年,草地、建筑用地、林地、水域面积增加,耕地、未利用地面积下降,贵南县生态环境逐渐趋于好转。
译  名：
Dynamics Analysis on Landscape Pattern of Alpine-cold Desertified Area in the Qinhai-Tibetan Plateau:A Case Study in Guinan County,Qinghai Province
作  者：
FENG Yi-ming1,WU Bo2,LU Qi2,WANG Xue-quan2,YANG Heng-hua3,SUN De-fu3(1.Research Institute of Forest Resources Information Techniques,CAF;Key Laboratory of Forest Remote Sensing,State Forestry Administration,Beijing 100091,China;2.Research Institute of Forestry,CAF;Key Laboratory of Tree Breeding and Cultivation,State Forestry Administration,Beijing 100091,China; 3.Shazhuyu Sand Control Experimental Station of Qinghai Province,Gonghe 813005,Qinghai,China)
关键词：
landscape pattern;landscape dynamics;remote sensing;alpine-cold desertified area
摘  要：
Landuse cover and landscape patterns of 3 periods(1976,1996,2006) in Guinan County,Qinhai,China were studied by using remote sensing and GIS techniques,as well as the dynamics of landscape pattern.The results were as follows.(1) The grassland was the basic landscape background of the general terrain character of Guinan County,at the same time,lots of deserted landscape elements(such as sandy land and drying ravines) were distributed among grasslands.In 1970s,the landscape disturbed by human being was relatively few,and up to 1990s,the landscape disturbed by human being was increased.(2) In 1976,significant differences in dominance were found among patch types,landscape fragmentation value was small,and landscape diversification was simple.After 1996,there were obvious change in the pattern of patch and the landscape became complicated.(3) In the last 30 years,the transformation speed of landscape elements(including grassland,crop land,forest land,building land and unused land) to other landscape elements displayed a accelerating state.During 1976—1996,a vast area of grasslands was reclaimed into cultivated land.During 1996—2006,the phenomena to protect and to destroy ecological environment existed simultaneously.Moreover,the unused land that transformed to other landscape elements was small.Hence,to control the ecological environment of Guinan County comprehensively would be a long way.(4) The forecasted results on landscape pattern of Guinan County in 2016 indicated that the area of grassland,forest land and water area would be increased and the area of cultivated land and unused land would be decreased,so the ecological environment of Guinan County would become better slowly.

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