摘要
采用经典的土壤理化性质测定和滨海植被调查方法,对惠东港口海龟国家级自然保护区湿地表层土壤理化性质及其与植被相关性展开研究。结果表明:湿地的表层土壤质地主要是砂土。盐度、含水量、比重、容重以及孔隙度的变化范围分别是:0.13%~0.26%、1.61%~9.33%、1.46~2.84、1.14~1.57g·cm-3、1.00%~54.00%。p H均为7.00~7.50。有机质、有机碳、碱解氮、速效磷、速效钾、交换性钠的变化范围分别为1.60~22.93 g·kg^(-1)、0.88~13.30 g·kg^(-1)、13.80~155.70 mg·kg^(-1)、0.60~8.20 mg·kg^(-1)、1.17~12.24 mg·kg^(-1)和9.12~32.31 mg·kg^(-1)。表层土壤的盐度与交换性钠呈极显著的正相关性。比重与孔隙度呈极显著正相关性。容重与碱解氮、速效钾、有机质和有机碳呈现显著负相关性。同时有机碳与有机质、碱解氮和速效钾呈现极显著正相关性。有机质与碱解氮和速效钾呈现极显著正相关性。碱解氮与速效钾呈现极显著正相关性,而速效钾与交换性钠表现出显著正相关性。湿地植被的丰富度指数乔木层最高,草本层其次,灌木层最低。土壤有机质含量、有机碳含量与灌木层Shannon-Wiener多样性指数呈显著正相关。
The physicochemical properties of the surface soil and their correlation with vegetation in Huidong Harbor Sea Turtle National Nature Reserve were studied in this paper by the classic assay method.The results showed that the surface soil texture was mainly sandy.The salinity,water content,specific gravity,bulk density and porosity of the surface soil varied from 0.13%-0.26%,1.61%-9.33%,1.46-2.84,1.14-1.57 g·cm-3,1.00%-54.00%,respectively.The value of p H was 7.00-7.50.The ranges of soil organic matter,organic carbon,alkali-hydrolyzed nitrogen,available phosphorus,available potassium and exchangeable sodium were 1.60-22.93g·kg^(-1),0.88-13.30 g·kg^(-1),13.80-155.70 mg·kg^(-1),0.60-8.20 mg·kg^(-1),1.17-12.24 mg·kg^(-1)and 9.12-32.31 mg·kg^(-1),respectively.There was a significant positive correlation between salinity of soil and exchangeable sodium.The specific gravity correlated porosity with positive correlation.The bulk density was negatively correlated with alkali-hydrolyzed nitrogen,available potassium,organic matter and organic carbon.Furthermore,organic carbon and organic matter,alkali-hydrolyzed nitrogen and available potassium showed extremely significant positive correlations.Organic matter was significantly positive correlated with alkali-hydrolyzed nitrogen and available potassium.The alkali-hydrolyzed nitrogen was significantly positive correlated with available potassium.And available potassium showed a markedly positive correlation with exchangeable sodium.The richness of vegetation was highest in tree layer,followed by herb layer and lowest in shrub layer.Soil organic matter content and organic carbon content were positively correlated with Shannon-Wiener diversity index in shrub layer.
作者
端金霞
李海文
李志文
何汝蜜
王付民
朱奕秀
DUAN Jinxia;LI Haiwen;LI Zhiwen;HE Rumi;WANG Fumin;ZHU Yixiu(Huidong Sea Turtle National Reserve Management Bureau,Huizhou,Guangdong 516359,China;School of Life Science and Technology,Lingnan Normal University,Zhanjiang,Guangdong 524048,China)
出处
《林业与环境科学》
2022年第5期21-28,共8页
Forestry and Environmental Science
基金
自然资源事务管理——生态林业建设专项资金(2021-445986)
岭南师范学院红树林研究院开放课题(ZDXM01)。
关键词
海龟湾
湿地
土壤理化性质
相关性分析
植物-土壤反馈
Turtle bay
wetland
soil physicochemical properties
correlation analysis
plant-soil feedback
