摘要
在山东滨海盐渍区选取81个样方进行植物群落调查,对土壤化学性质进行分析,研究耐盐植物分布与土壤pH、可溶性盐总量、全氮、全磷、有机质、K^+、Na^+、Ca^(2+)、Mg^(2+)、Cl^-、SO_4^(2-)和HCO_3^-12个土壤化学因子之间的关系.结果表明:共记录耐盐植物30科67属85种,排名前三的优势科为菊科、禾本科、藜科.群落类型分为4类,分别是芦苇-白茅+茵陈蒿群落、盐地碱蓬+芦苇-茵陈蒿+地肤群落、芦苇-香蒲+罗布麻群落和芦苇-罗布麻群落.CCA排序表明,土壤可溶性盐总量和水溶性离子含量是影响该区域耐盐植被分布的关键土壤化学因子,其次是土壤全氮含量.优势种为芦苇,同时伴生白茅和茵陈蒿的群落在4个群落类型中具有较丰富的物种多样性,所蕴含的耐盐植物资源丰富.群落的物种多样性与土壤可溶性盐总量和水溶性盐离子含量呈显著负相关,高盐分土壤会降低群落的物种多样性指数,影响群落的物种多样性.
To reveal the correlation between plant communities and soil chemical factors（pH,the total amount of soil soluble salt,TN,TP,SOM,K^＋,Na^＋,Ca^2＋,Mg^2＋,Cl^-,SO4^2-,HCO3^- in Shandong coastal saline area,a field investigation of 81 samples was carried out and the chemical properties of the soil were analyzed. The results showed that a total of 85 species,67 genera and 30 families of salt-tolerant plants were recorded. The top three dominant families were Compositae,Gramineae and Chenopodiaceae. The community could be divided into four types： Phragmites australis-Imperata cylindrical ＋ Artemisia capillaris,Suaeda salsa ＋ P. australis-A. capillaris ＋Kochia scoparia,P. australis-Typha orientalis ＋ Apocynum venetum,P. australis-A. venetum.The CCA sequencing results showed that the soil total soluble salt and water-soluble ions were the key chemical factors affecting the distribution of salt-tolerant vegetation,followed by total nitrogen content. The community of P. australis-I. cylindrical ＋ A. capillaris had richest species diversity among the four community types,and the resources of salt-tolerant plants were abundant. The species diversity of plant community showed a significant negative correlation with soil total soluble salts and water soluble salt ions content. The plant community diversity index would be reduced by the high saline soil.
作者
尹德洁
张洁
荆瑞
董丽
YIN De-jie, ZHANG Jie, JING Rui, DONG Li(National Engineering Research Center for Floriculture/Beijing Laboratory of Urban and Rural Ecological Environment/ College of Landscape Architecture, Beijing Forestry University, Beijing 100083, China)
出处
《应用生态学报》
CAS
CSCD
北大核心
2018年第11期3521-3529,共9页
Chinese Journal of Applied Ecology
基金
北京市共建项目资助~~
关键词
滨海盐渍区
土壤化学因子
空间异质性
耐盐植物
coastal saline area
soil chemical factor
spatial heterogeneity
salt-tolerant plant.
