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以张峰水库与配套输水工程建设及影响区域2002和2010年的TM遥感影像为数据源,结合6大土地利用分类,选择斑块密度(PD)、最大斑块指数(LPI)、边缘密度(ED)、景观形状指数(LSI)等景观指标,分析了水库工程建设对生态型景观的影响:枢纽工程及蓄水影响区,耕地景观数量和面积均呈现降低,草地斑块数量和面积呈现增大,林地保持不变;输水工程影响区,耕地景观斑块各项指标均呈现下降,草地各项指标均呈现增加,林地和水域保持不变;从整个工程影响区来看,耕地斑块数量和面积减小且形状趋于简单化,草地斑块数量和面积趋于增大且边缘密度、形状指数表现为下降。研究表明,水库工程建设对周边生态型景观空间格局变化具有一定影响,且与空间尺度有一定关系。针对水生态环境质量提高,提出了植被恢复建议。
Based on the TM remote sensing images of Zhangfeng Reservoir and supporting water conveyance construction and affected areas in 2002 and 2010, and combining with the classification of six major land uses, the paper selected PD, LPI, (ED) and landscape shape index (LSI), the impact of reservoir construction on ecotype landscape was analyzed: the hinge project and impacted area, the quantity and area of cultivated land decreased, the number and area of grassland patch appeared And the forest land remained unchanged. The indicators of cultivated land landscape patch all showed a decline in the affected area of water conveyance project, and the indexes of grassland showed an increase while the forest land and water area remained unchanged. From the perspective of the affected area of the project, The number and area of the blocks are reduced and the shape tends to be simplified. The number and area of grass patches tend to increase and the edge density and shape index decrease. The research shows that the construction of reservoirs has a certain influence on the change of landscape pattern of the surrounding ecological landscape, and has some relations with the spatial scale. In view of the improvement of aquatic ecological environment, the suggestion of vegetation restoration was put forward.