Value Assessment and Spatiotemporal Variation Characteristic Analysis of Ecological Products in the Yellow River Delta
The purpose of this study is to establish a unified and effective methodology for valuing ecological products,and identifying their spatial distribution and temporal dynamics,to provide insights for pathways that realize ecological product values and ecological damage compensation systems. The research methods include ecological process model and emergy analysis based on remote sensing data. The research findings are as follows:1) the ecological product value of the Yellow River Delta increased significantly from 2000 to 2020,with a growth rate of 125.39％. The proportion of material supply and regulatory services decreased,while that of cultural services increased. 2) In terms of individual indicators,the values of water purification and carbon storage decreased;the physical quantities of water conservation and carbon storage showed a downward trend;the emergy and value of crop production and carbon storage declined;the other physical quantity,emergy,and value indicators showed growth trends. 3) Spatially,the ecological product value exhibits a "high in the middle,low in the northeast" pattern,with a gradient decrease from the central region to the periphery. High-value areas for grain production,aquaculture and recreational services are concentrated along the Yellow River banks,coastal areas and the river's mouth. Water conservation and water purification services show a "high in the middle,low in coastal areas" spatial characteristic. Both soil conservation and carbon storage services demonstrate a dynamic increase towards the central region. In conclusions,the combined methodology of satellite remote sensing data,ecological process models and emergy analysis significantly improves the objectivity and practicality of ecological product value assessment,which facilitates the realization of ecological product values in the Yellow River Delta and the effective implementation of ecological compensation and environmental damage compensation policies.
ecological product valueremote sensing dataemergy theoryecosystem servicethe Yellow River Delta
万方数据
维普
