Assessment of potential pressure caused by sea use activities on the eco-environment of bays: A case study in Laizhou Bay, China

doi:10.3969/j.issn.1001-909X.2018.03.008

Abstract

Abstract: The potential pressure caused by sea use activities on marine eco-environment in Laizhou Bay was quantitatively evaluated based on GIS and geospatial modeling by combining the spatial distribution of marine ecological red line zone. We firstly identified the spatial distribution patterns of all anthropogenic pressures as well as their potential impact on key marine habitats. The general characteristic of spatial distribution of potential anthropogenic pressure on the eco-environment in Laizhou Bay can be described as that in the offshore area is higher than that in the far-shore area and the sequence from high to low is: the bay-head, the east area, the west area. Overall, the high pressure area is concentrated in the sea area within 10 km and the water depth within 5 m. It is worthy to note that a few of marine ecological red line zones, such as marine special protected areas, natural reserves, and important estuarine ecosystems, have already threatened by pressure caused by sea aquaculture and salt industry. The study reveals the spatial distribution pattern of the potential pressure of sea use activities on the marine ecological environment in Laizhou Bay. Accordingly, a few policy suggestions are also proposed at the end to implement the spatial planning of marine ecological red line zones and regulate utilization of sea area.

Key words: spatial quantification, sea use activity, pressure assessment, Laizhou Bay

CLC Number:

X826

LIU Bai-jing, WU Xiao-qing, DU Pei-pei, GAO Meng, DU Xiao-yan. Assessment of potential pressure caused by sea use activities on the eco-environment of bays: A case study in Laizhou Bay, China[J]. Journal of Marine Sciences, 2018, 36(3): 76-83.

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