From blue to black: Anthropogenic forcing of carbon and nitrogen influx to mangrove-lined estuaries in the South China Sea
From blue to black: Anthropogenic forcing of carbon and nitrogen influx to mangrove-lined estuaries in the South China Sea
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DOI：
10.1016/j.marpolbul.2016.01.008
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发表时间：
2016-08-30
影响因子：
5.8
通讯作者：
Lee, S. Y.
中科院分区：
文献类型：
--
作者：
Lee, S. Y.
东南亚是全球红树林发展中心，但人类活动已大幅减少该地区红树林面积。对1997年至2010年间生活污水排放、水稻种植化肥使用和海水养殖造成的环境损失这三种人为营养源引起的碳和氮流入南海的变化进行了分析。人为碳和氮流入量分别是1997年的1.81倍和1.43倍，其中沿海水产养殖贡献最大。相比之下，2010 年，边缘红树林提供了与人为来源类似的 44% 的碳，但仅相当于 3% 的氮。1997 年，红树林流入的碳和氮分别占人为流入的 113% 和 6%。相对不稳定的人为养分对红树林来源的主导地位将改变近岸营养动力学，对红树林和珊瑚等不耐受养分的系统的恢复能力产生负面影响。 (C) 2016 Elsevier Ltd. 保留所有权利。
Southeast Asia is the global centre of mangrove development but human activities have dramatically reduced mangrove area in the region. An analysis is made of the shift in carbon and nitrogen influxes into the South China Sea (SCS) resulting from three anthropogenic nutrient sources: domestic sewage discharge, fertilizer use in rice agriculture and environmental loss from mariculture, between 1997 and 2010. Anthropogenic C and N influxes were, respectively, 1.81 x and 1.43 x those in 1997, with coastal aquaculture contributing most to the increase. In contrast, fringing mangroves provided similar to 44% of the C but only similar to 3% of the N from anthropogenic sources in 2010. In 1997, influx from mangroves was 113% and 6% of anthropogenic influx for C and N, respectively. This dominance by relatively labile anthropogenic nutrients over mangrove sources would change nearshore trophodynamics, with negative implications for the resilience of mangroves and nutrient-intolerant systems such as corals. (C) 2016 Elsevier Ltd. All rights reserved.