辽河口海域使用变化下的生态敏感性分析

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Abstract This research systematically examined the ecological sensitivity of the Liaohe estuary in Panjin City, Liaoning Province to changes in the area of sea used for various activities based on data from remote sensing images in 1990, 2000, 2007 and 2014. First, the ecological sensitivity mechanisms of the major sea use activities were analyzed, including land reclamation, farming and industrial activities along the shore. Second, an Ecological Sensitivity Index (ESI) to changes in the area of different marine uses was constructed as the ratio of the variation of ecosystem services values to sea use intensity. The dynamic changes in ESI were calculated from 1990 to 2014. Finally, the spatial patterns of ecologically sensitive areas were obtained using spatial analysis tools in ArcGIS. The results showed that the area of sea used for human activities increased significantly from 2977.32km² in 1990 to 3059.96km² in 2014. The major types of change were open aquaculture, marine aquaculture and marine industry, which were mainly developed on former Suaeda salsa communities and mudflats; The hemeroby index (HI) tended to increase particularly from 2007 to 2014, while the ecosystem services value showed the opposite trend, declining from 4.65×10₉ Yuan to 3.34×10₉ Yuan. This suggested that the HI was significantly negatively correlated with the ecosystem services value. The value of the ESI was 2.5 in 2001, and then increased to 4.7 in 2007 and to 4.8 in 2014. Overall, in the past 25years, the Liaohe estuary ecosystem has shown a low sensitivity to changes in the area of the sea used for human activities. Although there has been an increase in human development and use in this region over the past ten years, their impact on the whole estuarine ecosystem has not been very strong.

Key words： sea area changes hemeroby index ecosystem services value ecological sensitivity analysis liaohe estuary

Received: 15 May 2017

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	Articles by authors
	KANG Jing
	SUN Yong-guang
	LI Fang
	YUAN Lei
	QI Yue
	FU Yuan-bin
	MA Hong-wei
	LIN Xia

Cite this article:

KANG Jing,SUN Yong-guang,LI Fang等. Ecological sensitivity of the Liaohe estuary to changes in sea area use[J]. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(12): 4722-4733.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2017/V37/I12/4722

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