Spatial assessment of cumulative impact on China’s marine ecosystems

Jiang Qutu; Ding Jieqiong; Ye Guanqiong; Zeng Jiangning

doi:10.12284/hyxb2021058

Volume 43 Issue 9

Sep. 2021

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Jiang Qutu，Ding Jieqiong，Ye Guanqiong, et al. Spatial assessment of cumulative impact on China’s marine ecosystems[J]. Haiyang Xuebao，2021, 43(9)：146–156 doi: 10.12284/hyxb2021058

Citation:

Jiang Qutu，Ding Jieqiong，Ye Guanqiong, et al. Spatial assessment of cumulative impact on China’s marine ecosystems[J]. Haiyang Xuebao，2021, 43(9)：146–156 doi: 10.12284/hyxb2021058

Citation:

Jiang Qutu，Ding Jieqiong，Ye Guanqiong, et al. Spatial assessment of cumulative impact on China’s marine ecosystems[J]. Haiyang Xuebao，2021, 43(9)：146–156 doi: 10.12284/hyxb2021058

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Spatial assessment of cumulative impact on China’s marine ecosystems

doi: 10.12284/hyxb2021058

1.
Ocean College, Zhejiang University, Zhoushan 316021, China
2.
Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China

Received Date: 2020-10-20
Rev Recd Date: 2021-01-04

Available Online: 2021-08-04

Publish Date: 2021-09-25

Abstract

Abstract

The cumulative human impact assessment of marine ecosystems is an ecological method to scientifically recognize the response and feedback laws of the system to external disturbances. In order to explore and reveal the inherent mechanisms, the region of coastal seas of China as the research scope in this article, selecting 16 ecological factors in four aspects, marine fishery, marine shipping, land-based and offshore pressures, and climate change. And by spatial quantization and standardization, the cumulative exposure and impact assessment of the 9 marine habitat types in the study area are carried out under the 1 km×1 km spatial grid scale. The results show that the cumulative exposure in the study area is generally higher in the coastal seas than in the pelagic, and gradually decreases to the far ocean; the coastal seas ecosystem is mainly affected by land-based pollution and fishing, and overall climate change contributes the most; 22.8% and 7.6% of China’s coastal seas are respectively highly and extremely highly affected, among which the Changjiang River Delta is the most affected by human activities.
- China coastal seas,
- human activities,
- marine ecosystems,
- spatial cumulative effects

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References(35)

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