Abstract：
The value of ecosystem services is an extremely important parameter that reflects regional ecological benefits and resources. Estimating the value of ecosystem services is essential for regional land-use optimization, ecological construction, and biodiversity protection. In this study, Landsat-TM/ETM remote sensing images were used to analyze land-use data in 1990, 2000, 2010, and 2020 of the Yellow River Basin (Henan section), China, defined by natural boundaries. An equivalent factor method was used to construct a model to calculate the ecosystem services value that introduced grain yield, regional difference coefficient, and social development stage coefficient. Thus, land-use changes and evolution of ecosystem services values in the Yellow River Basin (Henan section) in the past 30 years were analyzed. Land use in the basin changed significantly from 1990 to 2020. Except for an increase in area of construction land, areas of other land-use types decreased. Cultivated land area first increased and then decreased, whereas the water area first decreased and then increased. The total value of ecosystem services in the study area fluctuated but increased overall by 43.82 × 108 USD in the past 30 years. Spatially, the total value of ecosystem services was high in the southwest and low in the northeast. Among individual ecosystem service values, water conservation, gas regulation, and climate regulation accounted for a relatively high proportion of the total value. Regulation services were the main ecosystem service functions, followed by support and supply services, with cultural services accounting for the lowest proportion. Sensitivity coefficients of different land types in different periods were all less than one. Therefore, the value coefficients were reasonable, and the results were consistent with the actual situation of the study area. The study improves the method to estimate the ecosystem services value of the basin and also indicates ways to support ecological protection of the Yellow River Basin (Henan section), China.
摘要：
生态系统服务价值是反映区域生态效益和资源的一个极其重要的参数。评估生态系统服务的价值对于区域土地利用优化至关重要，生态建设,生物多样性保护。在这项研究中,利用Landsat-TM/ETM遥感影像对黄河流域(河南段)1990年、2000年、2010年和2020年土地利用数据进行分析,中国,由自然边界定义。采用当量因子法构建模型,计算了引入粮食产量的生态系统服务价值,区域差异系数，和社会发展阶段系数。因此，分析了近30年来黄河流域(河南段)土地利用变化及生态系统服务价值演变。从1990年到2020年，流域土地利用发生了显著变化。除建设用地面积增加外，其他土地利用类型的面积减少。耕地面积先增加后减少,而水域面积先减少后增加。在过去的30年中，研究区的生态系统服务总价值波动，但总体增长了43.82×108美元。空间上,西南地区生态系统服务总价值较高，东北地区较低。在个体生态系统服务价值中，节约用水,气体调节,和气候调节占总价值的比例相对较高。调节服务是主要的生态系统服务功能，其次是支持和供应服务，文化服务占比最低。不同时期不同土地类型的敏感性系数均小于1。因此,价值系数是合理的，结果与研究区的实际情况相符。该研究改进了流域生态系统服务价值的估算方法，并指出了支持黄河流域（河南段）生态保护的方法。中国。
