Dr. Sheng Zhao Profile

Dr. Sheng Zhao

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Proceedings Article | 23 February 2023 Paper

Evaluation of water resources in Zhoushan archipelago based on water footprint theory

Chaona Gu, Feng Gui, Liuzhu Wang, Sheng Zhao, Qun Le

Proceedings Volume 12551, 1255129 (2023) https://doi.org/10.1117/12.2668188

KEYWORDS: Water, Industry, Agriculture, Water content, Oceanography, Geographic information systems

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Based on the theory of water footprint and the spatial processing method of GIS data, this paper makes a comprehensive analysis on the population density, economic benefit and water resources scarcity of Zhoushan archipelago. The results show that the per capita water footprint of Zhoushan archipelago is 830.82 m³/person, which is smaller than that of Hangzhou and Jiaxing in the same latitude of Zhejiang Province. The average population density of water footprint in Zhoushan archipelago is 12.04 person/10,000 m³, showing a trend of high in north and south and low in central China. The average economic benefit of water footprint is 135.11 yuan/m³; the high value area is distributed in the south of Zhoushan archipelago, Dinghai District and Putuo District, where the economy is more developed, the average degree of water shortage in Zhoushan archipelago is 1.41, water resources are relatively scarce, and the pressure of water resources is greater. In view of this, we should improve the residents' awareness of water saving, reduce the discharge of sewage, and pay attention to the rational distribution of water resources among regions to reduce the pressure of water resources in the core urban areas.

Proceedings Article | 17 December 2021 Paper

Temporal and spatial changes of habitat quality in the area around Hangzhou Bay based on InVEST model

Yue Ding, Feng Gui, Sheng Tian, Sheng Zhao

Proceedings Volume 12153, 1215308 (2021) https://doi.org/10.1117/12.2626517

KEYWORDS: Animal model studies, Data modeling, Analytical research, Vegetation, Mining, Ecology, Visualization, Roads, Ecosystems, Data centers

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This paper selects Chinese second largest bay area—the Hangzhou Bay area as the research area. Based on the three phases of land use data in 2000, 2010 and 2018, the InVEST model is used to calculate the spatial differentiation and temporal changes of habitat quality in the study area from 2000 to 2018. Combined with spatial autocorrelation and socio-economic data, the impact of land use changes in the study area on the changes in the spatial and temporal patterns of habitat quality is analyzed. The results show that:(1) The land use type conversion in the study area is significant, which is mainly manifested by the rapid expansion of construction land to squeeze the area of cultivated land;(2) The average habitat quality index in 2000, 2010 and 2018 are 0.5675, 0.5540, and 0.5534, respectively, showing a ‘high in the southwest and low in the northeast’. In the spatial pattern of ‘Habitat Quality’, the area of poor habitat quality is almost half of the total area. The reason for the decline is mainly due to the conversion of fair-grade areas into poorgrade areas. The phased comparison shows that the improvement of habitat quality is concentrated in In woodland and grassland areas, the quality of most habitats has slightly declined, and urban construction and regional policies are important influencing factors; (3) The spatial autocorrelation analysis shows that the quality of habitats shows a certain spatial agglomeration and is getting closer and closer, and cold spots are concentrated in areas For woodland and grassland areas, hotspots are mainly distributed in cities, towns and Qiandao Lake area; while habitat degradation hotspots are mainly distributed in the northern areas of Shanghai, Huzhou, Hangzhou, Ningbo and most parts of Shaoxing. How to make scientific preventions against rapid urbanization Policies need urgent attention.

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