| 祁连山自然保护区青海云杉林近四十年动态变化分析 |
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| 引用本文： | 别强,赵传燕,强文丽,何磊.祁连山自然保护区青海云杉林近四十年动态变化分析[J].干旱区资源与环境,2013(4):176-180. |
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| 作者姓名： | 别强 赵传燕 强文丽 何磊 |
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| 作者单位： | 兰州大学资源环境学院;兰州大学草地农业系统国家重点实验室;中国科学院地理科学与资源研究所 |
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| 基金项目： | 国家自然科学基金项目(No.91025015,No.30770387);环境保护公益性行业科研专项(NEPCP 200809098)资助 |
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| 摘 要： | 数字化1960年测绘的祁连山地形图和基于知识规则分析祁连山1990年和2000年Landsat TM、ETM影像,对祁连山自然保护区青海云杉林空间分布及其变化进行分析。结果表明:青海云杉林主要分布在祁连山的东部和中部,即石羊河和黑河流域上游;1960年祁连山青海云杉林面积为1494.60km2,占整个保护区面积的5.456%。1990年青海云杉面积为1336.85km2,2000年青海云杉面积为1375.25km2,呈现先减少后增加的趋势;保护区东、中、西段青海云杉动态变化趋势不同,1960年到1990年东段和中段区域青海云杉面积减少4%,而1990年到2000年中段面积增加,东段和西段青海云杉林分布面积减少;设立保护区对祁连山青海云杉的保护起到了明显的作用,遏制了青海云杉面积的减少并且部分地区分布面积得到扩展。
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| 关 键 词： | 祁连山 青海云杉 动态变化 信息提取 |
Dynamic change of Picea crassifolia in Qilian mountain in recent 40 years |
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| BIE Qiang,ZHAO Chuanyan,QIANG Wenli,HE Lei.Dynamic change of Picea crassifolia in Qilian mountain in recent 40 years[J].Journal of Arid Land Resources and Environment,2013(4):176-180. |
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| Authors: | BIE Qiang ZHAO Chuanyan QIANG Wenli HE Lei |
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| Institution: | 1(1.College of Earth and Environmental Science,Lanzhou University,Lanzhou 730000,P.R.China;2.State Key Laboratory of Pastoral Agricultural Ecosystem,Institute of Arid Agroecology,School of Life Sciences,Lanzhou University,Lanzhou 730000,P.R.China;3.Institute of Geographic Sciences and Natural Resources Research;Beijing 100101,P.R.China) |
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| Abstract: | According to digitalization of topographic maps of Qilian mountain that made in 1960 and extraction information from Landsat TM\Picea crassifolia in Qilian mountain.The results showed that the Picea crassifolia mainly distributes in middle and eastern part of Qilian mountain,the upstream of the Heihe watershed and Shiyang watershed,the area of Picea crassifolia in Qilian mountain was 1494.60km2,in 1960,and 1336.849km2 in 1990,1336.849km2 in 2000.The change trend of Picea crassifolia is different in different part of Qilian mountain.The area of Picea crassifolia decreased by 5% from 1960 to 1990.However,from 1990 to 2000,the area of Picea crassifolia increased in the middle part.Establishment of the protection zone is very helpful for protecting the ecosystem of Picea crassifolia. |
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| Keywords: | Qilian mountain Picea crassifolia dynamic change information extraction |
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