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利用2000年和2009年的TM影像数据,对现代黄河三角洲滨海湿地的景观进行分类,将其划分为9种景观类型。利用ArcGIS9.3软件,依据2009年黄河三角洲滨海湿地GPS土壤定点采样点的理化分析数据,计算出土壤有机碳密度,并进行空间插值,结合各景观类型分布面积,估算表层(0～30cm深度)土壤有机碳密度和储量。研究结果表明,2000～2009年,研究区的总面积增加,土壤有机碳密度为0.73～4.25kg/m2;2000年和2009年的土壤总有机碳储量分别为3.43×106t和3.17×106t。各景观类型的土壤有机碳储量随着其面积的变化而变化,面积变化最明显的景观类型是滩涂、灌草地、农田和盐田养殖池,导致这种变化的原因是自然因素和人为因素共同作用的结果。减少和限制人类活动、保护表层土壤对黄河三角洲滨海湿地土壤碳库的持续稳定发展非常重要。
Using the TM image data of 2000 and 2009, the landscapes of the modern Yellow River Delta coastal wetlands are classified into nine landscape types. According to the physical and chemical analysis data of fixed points of GPS soils in the Yellow River delta coastal wetlands in 2009, the soil organic carbon density was calculated and the spatial interpolation was carried out. The surface layer (0 ~ 30cm depth) Soil organic carbon density and reserves. The results showed that from 2000 to 2009, the total area of the study area increased, and the soil organic carbon density was 0.73 ~ 4.25kg / m2. The total soil organic carbon storage in 2000 and 2009 were 3.43 × 106t and 3.17 × 106t, respectively. The change of soil organic carbon storage varies with the area of each landscape type. The landscape types with the most obvious change in area are tidal flat, shrub land, farmland and salt ponds. The reasons for this change are natural and human factors the result of. It is very important to reduce and restrict human activities and protect the topsoil from the persistent and stable development of soil carbon pools in coastal wetlands of the Yellow River Delta.