| 近10年青藏高原景观的斑块特征分析 |
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| 引用本文： | 王鸽,韩琳,金之川.近10年青藏高原景观的斑块特征分析[J].高原山地气象研究,2012,32(2):37-40. |
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| 作者姓名： | 王鸽 韩琳 金之川 |
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| 作者单位： | 1. 中国气象局成都高原气象研究所, 成都 610072; |
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| 基金项目： | 四川省气象局2010年度科学技术研究开发课题，中国气象局成都高原气象研究所开放实验室课题基金项目，高原大气与环境四川省重点实验室开放基金 |
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| 摘 要： | 本文以青藏高原地区2000年的土地覆盖数据和1999~2007年的NDVI数据为基础,在ERDAS和GIS软件的支持下,计算得到青藏高原地区1999~2007年的景观分布图,利用景观格局分析软件FRAGSTATS3.3,计算得到青藏高原区域的景观格局与分布特征。对计算结果的分析表明:1999~2007年间青藏高原地区森林和草地的斑块数目在降低,但是森林面积在增加,而草地面积在减小;积雪的斑块数目和斑块面积都呈减少趋势;荒漠景观的面积在减少,但是其斑块数目增加,青藏高原的荒漠化面积得到控制;草地景观在研究区域内占绝对优势,森林景观有较高的连通性和大块聚集分布特征,荒漠、积雪和水体景观的分布的连通性和聚集性比较差;景观多样性指数呈逐渐增大趋势,区域景观类型增多或景观类型多样化增加。从青藏高原景观的斑块特征来看,最近10年高原地区的生态环境有变好的趋势。
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| 关 键 词： | 青藏高原 景观格局 斑块 |
| 收稿时间： | 2012-02-12 |
The Landscape Patch Characteristics of Tibetan Plateau in Recent 10 Years |
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| WANG Ge
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HAN Lin
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JIN Zhichuan.The Landscape Patch Characteristics of Tibetan Plateau in Recent 10 Years[J].Plateau and Mountain Meteorology Research,2012,32(2):37-40. |
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| Authors: | WANG Ge HAN Lin JIN Zhichuan |
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| Institution: | 1. Institute of Plateau meteorology, CMA, Chengdu, 610072;2. Chengdu University of Information Technology, Chengdu, 610225;3. Sichuan Atmosphere Observation Technology Centre, Chengdu, 610072 |
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| Abstract: | Based on the land cover data of 2000 and NDVI data from1999 to 2007,the landscape pattern in Tibetan Plateau is calculated by using ERDAS and GIS software,the plateau region of the landscape pattern and distribution are calculated by using landscape pattern analysis software FRAGSTATS3.3.The results indicated: the number of patches of forests and grassland were reduced;patch area of forests was increased,while the grassland area was decreased.The number of patches and patch area of snow were reduced,the patch area of desert landscape was reduced,but the number of desert patches was increased.the study area was dominated by grassland landscape,and the forests landscape were higher landscape connectivity and distribution than desert,snow and water,Shannon’s Diversity Index had a gradual increasing trend,it showed that the regional landscape type or landscape type increased.The patch characteristics of landscape in plateau showed the ecological environment of plateau in last 10 years has a good trend. |
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| Keywords: | Tibetan Plateau landscape pattern patch |
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