Technology Application |
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The Monitoring of Changes of Land Vegetation Covers by Remote Sensing in Farming-pastoral Mixed Zones of North China:A Case Study in Guyuan County, Hebei Province |
LI Pan 1,2,3, HU De-yong 1,2,3, ZHAO Wen-ji 1,2,3 |
1. College of Resource Environment and Tourism, Capital Normal University, Beijing 100048,China;2.Key Laboratory of 3D Information Acquisition and application of Ministry, Beijing 100048, China;3.Resources,Environment and GIS Key Laboratory of Beijing, Beijing 100048, China |
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Abstract Based on the TM remote sensing images obtained in Guyuan County of Hebei Province in 1998, 2003 and 2008
and the landuse map as well as field data of the study area , the authors analyzed the spatial and temporal
patterns for dynamics changes of the vegetation cover in Guoyuan County in the past ten years by using the
dimidiate pixel model and expert classifier and consulting the statistical data with the purpose of understanding
the situation of ecological control The results show that most areas were in the moderate and relatively high cover
in the three monitoring periods, with the vegetation cover being improved in general. The condition of vegetation
cover was stable between 1998 and 2003, and was improved between 2003 and 2008. The areas with slightly increased
vegetation cover was mainly distributed in the plateau farmingpasture area, and the stable areas were mainly
distributed in the southern low mountain areas. The effect of the regulation project is remarkable.
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Keywords
Planning of Olympic Sites
Remote sensing technology
DOM
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Issue Date: 29 June 2010
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