Ecosystem service valuation of bays in East China Sea and its response to sea reclamation activities
Ecosystem service valuation of bays in East China Sea and its response to sea reclamation activities
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DOI：
10.1007/s11442-020-1772-1
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发表时间：
2020-07
影响因子：
4.9
通讯作者：
Ruiqing Liu;Hao Xu;Jialin Li;R. Pu;Chao Sun;Luodan Cao;Yimei Jiang;P. Tian;Lijia Wang
中科院分区：
文献类型：
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作者：
Ruiqing Liu;Hao Xu;Jialin Li;R. Pu;Chao Sun;Luodan Cao;Yimei Jiang;P. Tian;Lijia Wang
海湾生态系统服务价值及其对填海造地的响应对于制定海湾生态补偿政策和拓展蓝色经济空间具有重要的现实意义。基于1990-2015年东海12个主要海湾土地利用信息，定量分析了近25年来东海12个主要海湾生态系统的时空演变及其对填海造地活动的响应。分析结果表明，东海海湾ESV呈持续下降趋势，整个生态系统持续退化，其中南部海湾ESV的退化程度高于北部海湾。东海海湾esv空间分异显著，呈现由低值区向高值区持续下降的趋势。各海湾ESV的空间变化也很显著，从城市向内陆向沿海扩展，表明以填海造地为主的人类活动已成为东海海湾ESV演变的主要因素。海湾ESV对填海造地有显著响应，与填海造地强度呈显著负相关。南部海湾的相关性强于北部海湾，这是由于填海方式对泥质湾和基岩湾ESV演化的影响不同所致。填海活动对海湾生态系统的负面影响是滞后的。因此，应重视近海开发现状的动态监测预警、生态系统层面的围垦控制政策和滨海湿地保护区规划。加强海湾生态系统服务需求与服务供给能力的空间耦合机制研究，实现对海湾生态安全格局的系统调控。
Ecosystem service values (ESVs) of bays and their response to sea reclamation are of great practical importance for forming bay eco-compensation policy and extension of blue economic space. Based on land use information of bays collected during the period of 1990–2015, the spatiotemporal evolution of ESVs of 12 main bays in East China Sea and their response to sea reclamation activities over the past 25 years were quantitatively analyzed. The analysis results indicate that ESVs of bays in East China Sea showed a continuous downward trend and the whole ecosystem was continuously degraded, in which the degradation degree of ESV in the southern bays was higher than that in the northern bays. Spatial zoning of ESVs of bays in East China Sea was remarkable, showing a continuous downward trend from low-value to high-value zone. Spatial variation of ESVs of each bay was also significant, expanding from a city and from inland to the coast, which suggests that human activities, mainly reclamation, have become main agents for ESV evolution of bays in East China Sea. ESVs of bays have a significant response to sea reclamation, manifested as a significant negative correlation between ESV and reclamation intensity. The correlation in the southern bays was stronger than that in the northern bays, which was caused by different effects of sea reclamation modes on ESV evolution of muddy and bedrock bays. A negative effect of sea reclamation activities on bay ecosystem was hysteretic. Therefore, an attention should be paid to dynamic monitoring and early warning of development status in offshore areas, ecosystem-level reclamation control policy, and coastal wetland reserves planning. Moreover, the spatial coupling mechanism study between bay ecosystem service demand and its service supply capacity should be strengthened to realize systematic regulation of bay ecological security pattern.