Land use/cover change (LUCC) from increased urbanization significantly impacts regional ecosystem services. Based on a cold/hot spots analysis, this paper used grain yield, food prices, price index statistics, and a land use thematic map to study the impact of LUCC on four ecosystem services values (ESVs) in the Yangtze River Delta urban agglomeration, and determine the spatial differences resulting from the rapid urbanization LUCC. The correlation between the four ecosystem services was then studied and sensitivity analyses conducted to investigate whether any changes in the ESVs could lead to unacceptable unit value transfer uncertainties. It was found that most urban land was converted from farmland, and that before 2000, the total ESVs and the regulating services values (RSVs) increased significantly, after which it declined, the provisioning services values (PSVs) declined year on year, the habitat services value (HSV) and cultural and amenity services value (CSV) declined sharply after 2000, and the spatial distribution of the four ESVs were significantly different. Over time, it was found that the hot spots were shrinking and the cold spots were spreading. The provisioning services were found to be negatively correlated with habitat services and cultural and amenity services, the regulating services were weakly positively correlated with the provisioning services and significantly positively correlated with the habitat services and cultural and amenity services, and the habitat services were significantly positively correlated with cultural and amenity services. In the Yangtze River Delta urban agglomeration, the water area is the most important for the total ESVs, followed by non-bush forest. Paddy field is ranked third. Dryland, bush, grassland, and wetland are less important. The importance of barren land is almost zero. This research provides the government with a scientific basis from which to formulate spatial planning and environmental protection policies for ecological sustainable development in the Yangtze River Delta urban agglomeration.

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Water shortage has become an important factor restricting the sustainable development of cities. This paper adopts the research ideas and methods of relative resource carrying capacity, and uses China's national and Chongqing as reference areas to evaluate the relative water resources carrying capacity, the relative economic resource carrying capacity and the synthetic carrying capacity of Chengdu from 2000 to 2015, and analyzes Chengdu's carrying capacity of water resources relative to population and economy. Using the same method, the resource carrying capacity of each district and county in Chengdu from 2000 to 2015 was evaluated, and the spatial distribution of water resources in various districts and counties was analyzed. The research shows that compared with China's national and Chongqing, the relative water resources carrying capacity of Chengdu has been overloaded for nearly 10 years. To a certain extent, this reflects that Chengdu's economic growth is not compatible with the carrying capacity of water resources, and the existing economic growth model is constantly weakening the capacity of resources. In addition, there are still problems in the imbalance of water resources and economic development in various districts and counties in Chengdu. The water resources carrying capacity in the eastern region has been seriously overloaded, with the central city being in the most severe area, and the water resources in the western region have yet to be further developed and utilized. The research results provide a reference for the grim situation faced by the government in controlling the water resources carrying capacity of Chengdu.Therefore, in order to achieve sustainable development in Chengdu, it is necessary to deal with the coordinated development of population, water resources and social economy.