关键词: 小麦, 高光谱, 模型, 氮素监测

Abstract: Using the combination of “source-corridor” to construct ecological security pattern can maintain regional ecological security and promote human well-being. With Yingkou as a case, ecological sources were selected based on ecological sensitivity and the importance of ecosystem services. The ecological corridor suitability evaluation method and minimum cumulative resistance model were used to identify the potential ecological corridors. The key ecological sources and the important ecological corridors were identified through centrality analysis to construct the ecological security pattern of Yingkou City. The results showed that a total of 134 ecological sources with an area of 2203.88 hm² were selected in Yingkou. The total length of ecological corridors was 221.06 km. The suitability and important degree of ecological sources and corridors were higher in the southeast and lower in the north, with a large difference between the north and the south. The stepping stone patches and corridors should be constructed in the central and northern parts to promote the material and energy exchange between the north and the south. By putting forward the ecological network framework of “one belt, three regions, three corridors, and multipoints” in Yingkou City, the ecological security pattern was constructed, which would provide references for regional ecological conservation and sustainable development of the city.

Key words: model, hyperspectral, wheat, nitrogen monitoring