草业学报2018，Vol.27Issue(3)：33-43,11.DOI:10.11686/cyxb2017184
辉河湿地不同草甸植被群落特征及其与土壤因子的关系
Vegetation community characteristics of different meadows and their relationship with soil factors in Huihe wetland
摘要
Abstract
Wetland soils affect the quantity,growth,development,morphology and distribution of plant communities.Selecting the core area of Huihe National Nature Reserve as the study area,the vegetation communities of wetland meadow,swamp meadow,transition meadow,mature meadow and saline-alkali meadow were investigated.Soil samples from the different meadows were also analyzed.The study investigated characteristics of the dominant plant communities,the distribution of soil elements and the relationship between the two.Results showed that the meadows' vegetation characteristics were influenced by soil element distribution,hydrological regimes and plant growth characteristics.Changes in the Shannon-Wiener index and Simpson index showed a similar trend,with maximum values scored by mature meadow and minimum values by saline-alkali meadow.The Pielou index changes were:mature meadow＜saline-alkali meadow＜wetland meadow＜swamp meadow＜transition meadow.Swamp meadow had the highest aboveground and underground biomass,saline-alkali meadow the lowest.Meadow plants influenced soil nutrient content and change,while soil factors also had important feedback effects on vegetation growth.The results showed significant differences in soil elements across the different meadow plant communities.Transition meadows had the strongest capacity for absorbing and retaining soil carbon,nitrogen and phosphorus.There was a significant positive correlation between the Shannon-Wiener index and soil moisture content (MC),while there was a significant negative correlation with soil available phosphorus (AP).Soil organic matter (SOM),total nitrogen (TN) and available nitrogen (AN) were significantly positively correlated with vegetation height,soil SOM,TN and vegetation coverage.Vegetation aboveground and underground biomass were significantly negatively correlated with soil AP but positively correlated with AN.Soil total phosphorus (TP) had little effect on vegetation diversity,growth and biomass in this study.Redundancy analysis suggested that there was a certain degree of succession across the different meadows in Huihe wetland:mature meadow and wetland meadow might be the initial or final stage of the succession,and transitional meadow the middle stage.Soil nutrients were significantly affected by community succession.关键词
辉河湿地/草甸/植被群落/多样性指数/土壤性质/RDA分析Key words
Huihe wetland/meadows/vegetation community/diversity index/soil properties/RDA analysis引用本文复制引用
罗琰,苏德荣,纪宝明,吕世海,韩立亮,李兴福..辉河湿地不同草甸植被群落特征及其与土壤因子的关系[J].草业学报,2018,27(3):33-43,11.基金项目
环保公益性行业科研专项项目(201509040)资助. （201509040）
