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中国西部环境和生态科学研究计划 >
2001年资助项目 >
河西走廊内流区生态安全评价与景观规划预案研究 >
科学论文 >
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http://hdl.handle.net/2239/72631
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| Title: | 祁连山南坡植被景观格局及其破碎化 |
| Other Titles: | Vegetation landscape pattern and its fragmentation on southern slope of Qilian Mountain |
| Authors: | Tang, Cuiwen(汤萃文)
Zhang, Haifeng(张海风)
Chen, Yinping(陈银萍)
Yao, Xueling(姚雪玲)
Wang, Lijuan(王丽娟)
Xiao, Duning(肖笃宁) |
| Keywords: | 景观格局(landscape pattern)
景观破碎化(landscape fragmentation)
森林植被(forest vegetation)
GIS(GIS)
景观指数(landscape index)
祁连山南坡(southern slope of Qilian Mountain) |
| Issue Date: | Jul-2009 |
| Publisher: | 《生态学杂志》，2009,28（11）：2305-2310. |
| Abstract: | [中文摘要]：以扎麻什营林区的林相图和调查资料为基础,运用GIS手段,选取合适的景观格局指数,分析了祁连山南坡植被景观格局基本特征,并进行了破碎化评价。结果表明:研究区植被以草地和灌丛为主,景观基质已退化为裸地,各植被类型斑块密度远大于裸地,平均分维数较低,景观整体破碎化水平较高;草地和灌丛边界密度和破碎化指数均高于其他植被类型,反映出该区自然植被景观主要受放牧活动的影响;森林多以小面积零散分布,其中青海云杉林景观结构破坏较为严重,异质性较低,斑块形状趋于单一,显示出较高水平的破碎化,其他林种多以小面积集中分布于某些小的生境,受人类活动干扰较少,破碎化程度较低。
[英文摘要]：Based on the forest form map and investigation data of Zhamashi forest area, and by using GIS, appropriate landscape pattern indices were chosen to study the basic characteristics of vegetation landscape pattern on the southern s lope of Qilian Mountain, with the landscape fragmentation evaluated. In the stud y area, grass and shrub were the main vegetation types, and the landscape matrix had degraded to bare land. The patch densities of all vegetation types were far larger than that of bare land, and their mean fractal dimension was lower than that of bear land. All of these characters emphasized the highly fragmented condition of the vegetation landscape in this area. The total edge densities and fragment indices of grassland and shrub land were higher than those of other vegetation types, reflecting that the natural vegetation was mainly affected by grazing. The forests were more dispersed in small areas, and the landscape structure of picea crassifollia forest was heavily destroyed, being induced that the heterogeneity became lower and the patch shape tended to single, suggesting a high fragmentation degree. Other forest types were centralized in a certain habitat and less disturbed by human activities, suggesting a lower fragmentation degree. |
| URI: | http://hdl.handle.net/2239/72631 |
| Appears in Collections: | 科学论文
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| 祁连山南坡植被景观格局及其破碎化.pdf | | 268Kb | Adobe PDF | View/Open |
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