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中国沙漠 ›› 2012, Vol. 32 ›› Issue (5): 1472-1478.

• 生态经济 • 上一篇    下一篇

基于变化轨迹探测的植被景观格局动态分析——以塔里木河下游生态输水区域为例

刘桂林1,2,3, 艾里西尔·库尔班1,2*, 玉米提·哈力克4, 段含明5, Philipp Gartner6, Birgit Kleinschmit6, 阿布都米吉提·阿布利克木1, 牛 婷1,2   

  1. 1.中国科学院新疆生态与地理研究所, 新疆 乌鲁木齐 830011;
    2.中国科学院研究生院, 北京 100049;
    3.中国科学院南京地理与湖泊研究所, 江苏 南京 210008;
    4.新疆大学 资源与环境科学学院/新疆绿洲生态重点实验室, 新疆 乌鲁木齐 830046;
    5.西华师范大学 国土资源学院, 四川 南充 637002;
    6.柏林理工大学 景观建筑与环境规划研究所, 德国 柏林 10623
  • 收稿日期:2012-01-06 修回日期:2012-02-23 出版日期:2012-09-20 发布日期:2012-09-20

Analysis of Vegetation Landscape Pattern Dynamics Based on Trajectory Change Detection:
A case study of ecological water transportation in the lower reaches of Tarim River

LIU Gui-lin1,2,3, Alishir Kurban1,2, Umut Halik4, DUAN Han-ming5, Philipp Gartner6, Birgit Kleinschmit6, Abdimijit Ablekim1, NIU Ting1,2   

  1. 1.Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
    2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
    3.Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008,China;
    4.College of Resource and Environment Sciences/Xinjiang Key Laboratory of Oasis Ecology, Xinjiang University, Urumqi 830046, China;
    5.College of Land and Resources, China West Normal University, Nanchong 637002, Sichuan, China;
    6.Institute for Landscape Architecture and Environmental Planning, Technical University of Berlin, Berlin 10623, Germany
  • Received:2012-01-06 Revised:2012-02-23 Online:2012-09-20 Published:2012-09-20

摘要: 在遥感与GIS技术支持下,以2006、2007、2009、2010年Landsat-5/TM影像与2008年的CBERS/CCD影像为主要数据源,获得5 a的植被/非植被类型图。在此基础上,提取并归纳5 a间的植被变化轨迹:恒定植被、恒定非植被、转变为植被、转变为非植被、非稳定变化。利用景观格局分析软件FRAGSTATS 3.3计算了变化轨迹景观格局的3种景观指标。结果表明,2006—2010年植被面积减小,主要因为生态输水量减小、输水间隔较大,导致草本植被、乔灌木幼苗死亡;恒定非植被的比重最大,表明非植被类型是研究区的基质,其次是转变为非植被的比重,说明5 a间植被的衰退程度要强于恢复程度;转变为植被与非稳定变化两种类型属于过渡性植被变化类型,受生态输水量、分布的制约严重;各种变化轨迹类型的形状规则较为稳定,其中以恒定非植被类型最稳定而非稳定变化类型最不稳定。

关键词: 植被景观格局, 变化轨迹, 生态输水, 塔里木河下游

Abstract: Based on remote sensing and GIS technology, vegetation/non-vegetation in the lower reaches of Tarim River were classified from Landsat-5/TM images (2006, 2007, 2009, 2010) and CBERS/CCD images (2008). Five kinds of vegetation change trajectories (stable vegetation, stable non-vegetation, changing into vegetation, changing into non-vegetation, unstable change) were subsequently categorized from different temporal trends of vegetation change. Then landscape patterns of vegetation change trajectories for 5 years from 2006 to 2010 were analyzed with software FRAGSTATS 3.3 from aspects of three landscape indices: Percentage of Landscape(PLAND), Interspersion and Juxtaposition (IJI), Area-Weighted Mean Fractal Dimension Index (FARC_AM). Results showed that vegetation area decreased because the survival rate of vegetation seedlings decreased caused by reduced ecological water transportation volume and prolonged ecological water transportation interval. PLAND of stable non-vegetation was the largest, which indicated that non-vegetation was the major landscape class in the study area. IJI of changing into vegetation and unstable change trajectories were relatively higher than IJI of others, which showed that they were highly sensitive to water condition and responded strongly to the volume and allocation of ecological water transportation. The shapes of five change trajectories were all relatively regular with lower FRAC_AM values.

Key words: vegetation landscape pattern, change trajectory, ecological water transportation, the lower reaches of Tarim River

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