Abstract：
Land resources are foundational for human survival and development. In contrast, land use/land cover (LULC) dynamics drive considerable changes in ecosystem services. Recently, China witnessed a new stage of rapid urbanization. Therefore, investigating the relationships between ecosystem services value (ESV) and LULC in these areas is highly relevant. Based on the data of land use and socioeconomic development in Shanghai from 2000 to 2020, we adopted a land use/land cover dynamics analysis method and established the ESV per unit area at the city scale, discussed the impact of LULC on ESV spatially and quantitatively, and tested the research process based on the sensitivity analysis of the ESV coefficient. The results show that from 2000 to 2020, the LULC pattern in Shanghai rapidly changed. In particular, the area of cultivated land has shrunk by 123.96 thousand hm2, while the construction land has expanded by 141.26 thousand hm2, which has led to a decline in ESV of the entire city (especially regarding hydrological adjustment and biodiversity). Nevertheless, although the area of trench and lakes only occupies 1.67-3.16% of the total area of land, its ecological value accounts for an astonishing 23.80-50.70% of the total ESV. At the district level, the primary decline in eco-system services value was noted in the Chongming District in the north and Pudong New Area in the east of Shanghai. However, due to the overall planning of the city and the advantages of its resource endowment, Qingpu District and its surrounding areas in western Shanghai have witnessed improvements in terms of the values of hydrological adjustment, water supply, and environmental purification. This study presents a deeper and more comprehensive understanding of issues regarding ESV in rapidly urbanized areas, thereby providing an important reference for decision-makers regarding the rational layout of cities, sustainable use of land, and management of natural ecosystems.
摘要：
土地资源是人类赖以生存和发展的基础。相比之下,土地利用/土地覆盖(LULC)动态驱动生态系统服务的显著变化。最近,中国经历了快速城市化的新阶段。因此,调查这些地区的生态系统服务价值(ESV)与LULC之间的关系是高度相关的。基于上海市2000-2020年土地利用和社会经济发展数据,采用土地利用/土地覆盖动态分析方法,建立了城市尺度单位面积ESV,讨论了LULC对ESV的空间和定量影响，并基于ESV系数的敏感性分析对研究过程进行了检验。结果表明，从2000年到2020年，上海的LULC模式发生了快速变化。特别是,耕地面积减少12.396万hm2，建设用地扩大141.26万hm2，导致整个城市的ESV下降（特别是在水文调整和生物多样性方面）。然而，尽管沟渠和湖泊的面积仅占土地总面积的1.67-3.16％，其生态价值占ESV总量的23.80-50.70%。在地区一级，在上海北部的崇明区和东部的浦东新区，生态系统服务价值的主要下降。然而,由于城市的总体规划和资源禀赋的优势，上海西部青浦区及周边地区在水文调整价值方面有所改善，供水,和环境净化。本研究对快速城市化地区的ESV问题有了更深入、更全面的理解，从而为决策者合理布局城市提供重要参考，可持续利用土地,和自然生态系统的管理。
