摘要
外来红树植物在我国红树林修复工程中被广泛引入,虽具良好造林适应性与成林效率,但其生态入侵风险仍存在争议,缺乏系统评估其引入比例对生态系统健康与服务功能的影响。文章选取粤东高沙围、粤西水东和珠三角地区盐洲3个典型红树林区域,基于2024年实地调查数据,开展生态系统健康与生态服务功能综合评估,并对引入外来树种比例、水质和生物多样性等指标进行定量分析。结果表明,三地红树林均处于亚健康状态,单位面积生态服务价值为珠三角盐洲31.9×10^(4)CNY·hm^(-2)、粤西水东27.5×10^(4)CNY·hm^(-2)、粤东高沙围27.1×10^(4)CNY·hm^(-2)。外来树种比例与健康指数和单位面积服务价值均呈显著负相关,混合效应模型显示其每增加1%,健康指数下降0.936CNY·hm^(-2),服务价值下降1.456×10^(4)CNY·hm^(-2)。
Exotic mangrove species have been widely introduced in mangrove restoration projects across China due to their adaptability and high afforestation efficiency.However,their potential ecological invasion risks remain controversial,and systematic evaluations of their effects on ecosystem health and service functions are still lacking.This study investigated three representative mangrove ecosystems located in eastern Guangdong(Gaoshawei),western Guangdong(Shuidong),and the Pearl River Delta region(Yanzhou),based on field surveys conducted in 2024.A comprehensive evaluation of ecosystem health and ecosystem service values was conducted,incorporating key variables such as the proportion of exotic mangrove species,water quality,and biodiversity.Results showed that all three mangrove ecosystems were in sub-healthy condition,with per-unit-area ecosystem service values of 31.9×10^(4)CNY·hm^(-2)in Yanzhou,27.5×10^(4)CNY·hm^(-2)in Shuidong,and 27.1×10^(4)CNY·hm^(-2)in Gaoshawei.The proportion of exotic species showed a significant negative correlation with both health index and ecosystem service value.A linear mixed-effects model revealed that for every 1%increase in exotic species proportion,the health index declined by 0.936,and the service value decreased by 1.456×10^(4)CNY·hm^(-2).These findings highlight the multidimensional impact of exotic mangrove introductions on ecosystem structure and function.This study proposes restoration strategies that emphasize native species,water quality improvement,and enhancement of ecological functions,providing scientific guidance for exotic mangrove management and functional restoration.
作者
方扬
唐俊逸
罗育池
叶匡旻
邓炜华
FANG Yang;TANG Junyi;LUO Yuchi;YE Kuangmin;DENG Weihua(Guangdong Provincial Academy of Environmental Science,Guangzhou 510045,China)
出处
《热带海洋学报》
北大核心
2026年第2期173-190,共18页
Journal of Tropical Oceanography
基金
广东省环保专项资金项目(粤财预[2024]4号)。
关键词
广东红树林
生态系统健康
生态系统服务价值
外来红树
群落结构
Guangdong mangroves
ecosystem health
ecosystem service value
exotic mangrove species
community structure
