| 基于RS与GIS的鄂托克旗景观格局动态变化分析 |
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| 引用本文： | 春风,银山.基于RS与GIS的鄂托克旗景观格局动态变化分析[J].水土保持研究,2012,19(5):100-104. |
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| 作者姓名： | 春风 银山 |
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| 作者单位： | 内蒙古师范大学地理科学学院,呼和浩特,010022 |
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| 基金项目： | 鄂尔多斯地区综合节水与水资源优化配置研究项目(200801034) |
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| 摘 要： | 在RS与GIS技术的支持下,利用2000年和2007年两期TM遥感影像,运用景观生态学原理和数理统计分析方法,从景观类型水平和景观格局水平角度,选取景观斑块密度指数等7个指标对鄂托克旗2000—2007年间景观格局动态变化进行分析。结果表明:在景观类型水平上,除耕地和未利用地面积有所减少外,其他类型的面积都有不同程度的增加。其中变化幅度最大的是草地景观,变化速度最快的是未利用地景观。在景观格局水平上,斑块密度、边缘密度都有所增加,说明景观破碎化程度加剧,异质性越来越高,人类干扰影响也越来越大;景观周长—面积分维度指数的增加说明景观斑块的自我相似性减小,几何形状趋于复杂化;分离度的变化趋势说明人类活动对人工景观的干扰强于半自然景观;同时,区域景观异质性的增大,景观斑块的连通性降低,人类活动强度越来越大,表现为多样性指数和均匀度指数增加,优势度指数减小。
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| 关 键 词： | RS与GIS 鄂托克旗 景观格局 动态分析 |
Analysis on the Dynamic Change of Landscape Patterns in Etuoke County Based on RS and GIS |
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| CHUN Feng,YIN Shan.Analysis on the Dynamic Change of Landscape Patterns in Etuoke County Based on RS and GIS[J].Research of Soil and Water Conservation,2012,19(5):100-104. |
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| Authors: | CHUN Feng YIN Shan |
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| Institution: | (College of Geographical Science,Inner Mongolia Normal University,Hohhot 010022,China) |
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| Abstract: | Based on the support of RS and GIS technology,using two periods of TM images in 2000 and 2007 and the methods of landscape ecology and statistical analysis,seven indices was selected based on landscape class level and landscape pattern level to analyze dynamic change of landscape patterns from 2000 to 2007 in Etuoke Conty.The results showed that on the landscape class level,the areas of many landscape types increased while that areas of cropland and unused land landscape decreased.The biggest changing amount was cropland landscape,the fastest rate of change was unused land landscape.On the landscape pattern level,plaques density and edge density had both increased,which explained that the degree of landscape fragmentation had intensified and heterogeneity was also getting higher and higher,human disturbance effect was getting more and more serious.The increasing trend of the landscape perimeter-area sub-dimensions index(PAFRAC) indicated that the self-similarity of landscape patch decreased,and the geometric shape tended to be complicaed.The changing trend of the landscape separating degree(SPLIT) indicated that the human disturbance to artificial landscape was more intense than that on semi-natural landscape.Meanwhile,the regional landscape heterogeneity increased and the connectivity reduced,which presented the increase of diversity index and evenness index,decrease of dominance index. |
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| Keywords: | RS and GIS Etuoke County landscape pattern dynamic analysis |
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