广西植物2025，Vol.45Issue(9)：1578-1591,14.DOI:10.11931/guihaia.gxzw202504049
华南沿海卵叶喜盐草生物量差异及其关键影响因素
Differences in biomass of Halophila ovalis and their key environmental factors along the South China coast
摘要
Abstract
To investigate the relationship between biomass variation in Halophila ovalis and its environmental factors,this study systematically analyzed response relationship of H.ovalis biomass to multiple environmental factors using literature data(1990-2025)from the South China coast.Structural equation modeling(SEM)and linear mixed-effects model(LMM)were employed to quantify direct and indirect factors,such as water temperature,salinity,nutrients,suspended solids,and pH on biomass.The results were as follows:(1)Suspended solids in water significantly inhibited biomass accumulation and represented a widespread limiting factor across the region.(2)Water temperature,salinity,and nutrients[including dissolved inorganic nitrogen(DIN)and reactive phosphate in water(PO43-)availability]were key environmental factors leading to biomass differences.(3)Nitrogen and phosphorus nutrients,particularly ammonium nitrogen(NH4+-N),imposed critical constraints on biomass accumulation in each province(region),but dominant factors varied regionally.This study emphasizes that in the future,it is necessary to pay attention to the interaction effects of multi-scale environmental factors and formulate regional adaptive protection strategies based on environmental threshold management.The results of this study provide a scientific basis for the protection and restoration of the seagrass bed of H.ovalis.关键词
线性混合效应模型(LMM)/结构方程模型(SEM)/卵叶喜盐草/生物量/环境因子Key words
linear mixed-effects model(LMM)/structural equation modeling(SEM)/Halophila ovalis/biomass/environmental factors分类
农业科技引用本文复制引用
刘飞武,戴洪涛,郭宇明,盘远方,吴礼广,黄亮亮,邱广龙..华南沿海卵叶喜盐草生物量差异及其关键影响因素[J].广西植物,2025,45(9):1578-1591,14.基金项目
国家自然科学基金(32170399) （32170399）
广西科学院改革发展专项(2024YGFZ504-102). （2024YGFZ504-102）
