Forestry College, Guangxi University, Nanning 530004, Guangxi, China; Guangxi Key Lab of Mangrove Conservation and Utilization, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai 536000, Guangxi, China.
Guangxi Key Lab of Mangrove Conservation and Utilization, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai 536000, Guangxi, China.
Mar Pollut Bull. 2020 Mar;152:110887. doi: 10.1016/j.marpolbul.2020.110887. Epub 2020 Jan 14.
The exotic smooth cordgrass (Spartina alterniflora) has invaded intertidal wetlands near the Ronggenshan tidal flats of Beihai, Guangxi, China, where historically seagrasses and mangroves coexisted. We investigated sediment organic carbon (SOC) storage and macrobenthic community structure in the existing mangroves (MG), S. alterniflora (SA), seagrass bed (SG), and unvegetated flat (UnV) habitats following the S. alterniflora invasion. SOC storage increased after S. alternifolia invasion in the SG and UnV habitats. Spartina alterniflora invasion changed the dominant species of the macrobenthos in the original habitats and reduced the diversity of macrobenthos in SG and UnV habitats. Clearly, S. alternifolia invasion can change the ecological functioning of south China's coastal ecosystems by altering carbon sequestration and affecting biodiversity.
外来种互花米草（Spartina alterniflora）入侵了中国广西北海涠洲山潮滩附近的潮间带湿地，而历史上海草和红树林曾在此共生。我们调查了互花米草入侵后现有红树林（MG）、互花米草（SA）、海草床（SG）和无植被滩涂（UnV）生境中的沉积物有机碳（SOC）储存和大型底栖动物群落结构。在 SG 和 UnV 生境中，互花米草入侵后 SOC 储存增加。互花米草入侵改变了原生境中大型底栖动物的优势种，降低了 SG 和 UnV 生境中大型底栖动物的多样性。显然，互花米草入侵可以通过改变碳固存和影响生物多样性来改变中国南方沿海生态系统的生态功能。
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