摘要
研究探讨了广州南沙滨海湿地红树林植物群落的3个维次个体指标生长量与物种多样性。选取12个典型群落样地,分林上层、林下层、全层调查每个植物物种。运用单因素方差分析、NPar检验、Pearson线性相关分析对每个生长量指标(容易获取且精度较高)进行分析。结果表明:(1)无瓣海桑Sonneratia apetala群落与拉关木Laguncularia racemosa群落3个维次生长量显著高于其他群落,在浅层生态系统中占据主导地位;(2)南沙滨海湿地二期红树林中植物群落的物种结构丰富度较一期简单,二期林下层植物种类较少,且多为陆生维管植物,水生维管植物较少;(3)植物多样性与生长量的NPar检验分布为正态分布,两者的Pearson线性相关性分析表明高度、胸高面积、基部体积、胸高体积和冠层体积之间,林下层Shannon-Wiener指数与全层Simpson指数、全层Shannon-Wiener指数之间呈极显著正相关(P <0.01),其余指标之间无显著相关性。值得注意的是,人工红树林中生长较快的外引植物无瓣海桑为优势种,有蔓延趋势,存在较高的入侵风险,可能对乡土红树形成了一定的制约;乡土树种水黄皮Pongamia pinnata树形高大、长势旺盛,可作为优先考虑的滨海湿地植被恢复树种。
This study investigated the growth and species diversity of individual indicators in three dimensions of mangrove plant communities in Nansha coastal wetlands of Guangzhou.Twelve typical community sample plots were selected to investigate each plant species in the upper,lower and composite layers of the forest.One-way ANOVA,NPar test,and Pearson's linear correlation analysis were used to analyze each of the growth indicators(which were easy to obtain and had high precision).The results show that:(1)the Sonneratia apetala community and the Laguncularia racemosa community are significantly higher than the other communities and dominate the shallow ecosystem,with significant growth in the three dimensions.(2)The richness of plant community structure in the second phase of mangroves in Nansha Binhai Wetland is relatively poor compared to the first phase,with fewer plant species in the second phase of the forest understory and mostly terrestrial vascular plants and fewer aquatic vascular plants in the forest understory.(3)The distribution of plant diversity and growth volume NPar test was normal and Pearson linear correlation analysis showed a highly significant positive correlation between height,area at breast height,basal volume,volume at breast height,canopy volume,Shannon-Wiener index of the understory and Simpson index of the whole layer,Shannon-Wiener index of the whole layer(P<0.01),while the remaining indices were not significant among themselves.The exotic plant S.apetala is the dominant species and has a tendency to spread,posing a higher risk of invasion and forming a certain constraint on the native mangrove tree;the native tree species Pongamia pinnata is tall and vigorous,and can be considered a priority species for the coastal wetland.
作者
牛红苹
冯建祥
殷祚云
魏龙
NIU Hongping;FENG Jianxiang;YIN Zuoyun;WEI Long(Zhongkai University of Agriculture and Engineering,Guangzhou Guangdong 510225,China;School of Marine Sciences,Sun Yat-Sen University,Zhuhai Guangdong 519082,China;Guangdong Academy of Forestry/Guangdong Provincial Key Laboratory of Silviculture Protection and Utilization/Guangdong Coastal Shelter-belt Forest Ecosystem National Research Station,Guangzhou Guangdong 510520,China)
出处
《林业与环境科学》
2023年第2期6-16,共11页
Forestry and Environmental Science
基金
广东省林业科技创新项目(2021KYXM09,2022KYXM09,2021KJCX005)。
关键词
滨海湿地
红树林
群落结构
生物多样性
三维
coastal
wetlands
mangrove
community structure
biodiversity
three-dimensional indicators
作者简介
第一作者:牛红苹(1991-),女,硕士研究生,主要研究方向为湿地生态学及生物多样性保护,E-mail:niuhongping 9110@163.com;通信作者:殷祚云(1966-),男,教授,主要从事生态学、林学和生物统计学研究,E-mail:yinzuoyun@163.com;通信作者:魏龙(1976-),男,正高级工程师,主要从事林业碳汇、沿海防护林生态系统研究,E-mail:weilong@sinogaf.cn。
