| Environmental vulnerability and spatial difference characteristics in Naiman Banner |
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| DOI：10.7606/j.issn.1000-7601.2008.02.32 |
| Key Words: Naiman Banner LUCC land pattern ecological vulnerability spatial variation |
| Author Name | Affiliation | | JING Yuping | Northeast Institute of Geography and Agricultural Ecology Chinese Academy of Sciences,Changchun, Jilin 130012, China；Graduate School of Chinese Academy of Sciences,Beijing 100039，China | | ZHANG Shuwen | Northeast Institute of Geography and Agricultural Ecology Chinese Academy of Sciences,Changchun, Jilin 130012, China | | LI Ying | Northeast Institute of Geography and Agricultural Ecology Chinese Academy of Sciences,Changchun, Jilin 130012, China |
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| Abstract: |
| Taking Naiman Banner in Inner Mongolia as an example,synthetical ecological vulnerability index was built with the theory of landscape structure and the feature of land-use/land-cover based on GIS and RS technology,semivariogram analysis and block Kriging interpolation method were conducted to gain the distribution map of ecological vulnerability,and spatial characteristics and change mechanism of ecological vulnerability was analyzed.The results show that the status of ecological vulnerability is very serious in Naiman Banner,the average of ecological vulnerability index increased from 0.7445 to 0.7803 between 1976～2000.EVI is lower in south and north-west Naiman Banner,while both sides of state road No.111 and Jiaolai River between Daqintala town and No.6 farm is higher.The average EVI sequence of different agricultural production mode is farming-pastoral>pastoral>farming.Change of farming EVI shows stability while the other two agricultural production modes change obviously,moderate vulnerability area of farming-pastoral region decrease while serious vulnerability area increase obviously.So different ecological preservation policies should be adopted according to different land use/cover type and different agricultural production modes. |
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