Anthropogenic impacts on sedimentation in Jiaozhou Bay, China

Anthropogenic impacts on sedimentation in Jiaozhou Bay, China
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人为对中国胶州湾沉积物的影响

DOI:
10.1007/s11852-016-0466-4
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发表时间:
2016-10
影响因子:
2.1
通讯作者:
Ma Haoyang
Ma Haoyang
中科院分区:
环境科学与生态学4区
文献类型:
--
作者:
Yang Weifeng;Chen Min;Zhang Fang;Zhao Xiufeng;Fang Ziming;Ma Haoyang

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在过去的150年里,中国将其经济从封建制度(1911年前)转变为现代市场经济。在此期间,政策驱动的快速发展造成了一系列生态环境问题,沿海经济地区的生态环境问题尤为突出。尽管综合效应是可以肯定的,但不同政策在不同发展时期的具体效应一直难以理清。在这里,我们展示了过去150年来中国政策的足迹,以及它们对沿海环境的不同影响,记录在胶州湾沉积的时间动力学中。1935年以前,胶州湾的沉积以自然过程为主。在1935年引入现代经济政策后,由于政策驱动的人为活动(即盐田开发、海水养殖和填海造地),沉积物质量积累率(MAR)主要由海湾海域驱动。每项政策的MAR在前期呈上升趋势,后期呈下降趋势。上世纪90年代的填海造地导致3月份的增长速度远远快于早期的盐田开发。我们的结果表明,海洋开发,而不是自然过程,目前正在调节中国海湾的生态环境。
In the last 150 years, China transformed its economy from a feudal system (pre-1911) to a modern market economy. During this time, policy-driven rapid development created a series of ecological and environmental problems, especially in the coastal economic regions. Although the synthetic effects are certainly identifiable, the specific effects of different policies in different developing periods have been difficult to disentangle. Here we show that the footprints of Chinese policies in the last 150 years, and their different influences on coastal environments, were archived in the temporal dynamics of sedimentation in Jiaozhou Bay. Before 1935, natural processes predominantly controlled the sedimentation in Jiaozhou Bay. After the introduction of modern economic policies in 1935, the sediment mass accumulation rate (MAR) was overwhelmingly driven by the sea areas of the bay as a result of policy-driven anthropogenic activities (i.e. saltern development, mariculture, and land reclamation). An increasing MAR at the early stage of each policy, followed by a decrease at the late stage was observed. Land reclamation in the 1990s led to a much quicker increase of MAR than the earlier saltern development. Our results demonstrated that marine exploitation, instead of natural processes, are currently regulating the ecological environments of Chinese bays.
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