Peng Yisheng, Zheng Mingxuan, Zheng Zhouxiang, Wu Guichang, Chen Yuechao, Xu Hualin, Tian Guanghong, Peng Shenghua, Chen Guizhu, Lee Shing Yip
School of Environmental Science and Engineering/Research Center of Wetland Science, Sun Yat-Sen University, Guangzhou 501275, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-Sen University, Guangzhou 510275, China; Guangdong Wetland Conservation Association, 25th Floor, B Building, R&F Full Square, No. 16, Machang Road, Guangzhou 510627, China.
College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510640, China.
Mar Pollut Bull. 2016 Aug 30;109(2):691-9. doi: 10.1016/j.marpolbul.2016.06.083. Epub 2016 Jun 29.
Contrary to the global trend, the area of mangrove in Guangdong Province, southern China, has been increasing over the last two decades. Currently, three exotic mangrove species have been introduced for large-scale afforestation since 1985. A reassessment of the overall status of the mangrove species, habitat change, population of introduced species, was conducted through a comprehensive literature review as well as field investigations covering 96 sites. The success of conservation efforts is also evaluated. Upstream and high intertidal habitats are more vulnerable than downstream and lower intertidal ones, with habitat alteration being the biggest threats. Five mangrove species have narrow distributional extents with small populations, which could incur regional extinction. With the introduced species having naturalized at 42 sites, their role in mangrove management needs to be reconsidered. These findings collectively suggest a need to manage latent species loss and habitat degradation beyond the apparent increase in mangrove area and protection.
与全球趋势相反，中国南方广东省的红树林面积在过去二十年中一直在增加。自1985年以来，目前已引进三种外来红树林物种进行大规模造林。通过全面的文献综述以及覆盖96个地点的实地调查，对红树林物种的总体状况、栖息地变化、引进物种的种群数量进行了重新评估。同时也评估了保护工作的成效。上游和高潮间带栖息地比下游和低潮间带栖息地更脆弱，栖息地改变是最大的威胁。五种红树林物种分布范围狭窄，种群数量少，可能导致区域灭绝。由于引进物种已在42个地点归化，需要重新考虑它们在红树林管理中的作用。这些发现共同表明，除了红树林面积的明显增加和保护之外，还需要应对潜在的物种丧失和栖息地退化问题。
