3种解译方法在高速公路植被解译中的比较研究——以福建兴尤高速公路尤溪境内段为例

Comparative Study of Three Kinds of Interpretation Methods in Expressway Vegetation Interpretation——A Case Study in Youxi County Territory of Xingyou Expressway in Fujian

以海峡西岸经济区高速公路网规划项目中的兴尤高速尤溪县境内路段中心线两侧10 km范围作为研究区域,以遥感图像为主要信息源,整合多元数据并结合野外线路调查和样方调查的结果,再采用非监督分类、监督分类、叠加分类3种遥感解译手段对该评价区的遥感图像进行植被类型解译与制图,最终将该评价区的土地类型分为:针叶林、阔叶林、毛竹、经济林、农田、农村用地、水体7类,并且将3种解译方法的结果进行比较.研究结果表明叠加分类的解译结果最符合研究区实际植被情况,解译精度也最高.

The research area was 10 km on both sides of the segment of Xingyou expressway within the boundary of Youxi county.The expressway is one the projects of expressway network plan of the economic zone on the west side of the straits.Remote sensing images were the main source of information,the multivariate data were integrated as well as combined the results of wild quadrats and lines investigation,then with the help of unsupervised classification,supervised classification,and overlay classification these three methods of remote sensing interpretation,the remote sensing image of this evaluation region are vegetation interpreted and mapped.Ultimately the evaluation region is divided into 7 land types：coniferous forest,broadleaf forest,moso bamboo,economic forest,farmland,rural land and water.Comparing the results of these three methods of the interpretation,it shows that the interpretation result of overlay classification is the most accordant one to the real situation as well as the highest interpretation accuracy.