永定河河滨带植物群落分布与土壤环境的关系分析  

Analysis of the Relationship between Plant Community Distribution and Soil Environment in the Yongding River Riparian Zone

作　　者：于小飞 黄官刚 江澜 贾学桦 

机构地区：[1]北京市科学技术研究院资源环境研究所,北京

出　　处：《土壤科学》2024年第3期125-131,共7页Hans Journal of Soil Science

摘　　要：采用TWINSPAN (双向指示种分析)和CCA排序(典范对应分析)的方法,针对永定河河滨带恢复过程中的植被划分了群落类型,并分析了植被空间分布与土壤环境因子关系,明确了永定河河滨带植被空间分布的关键影响因子。结果表明:18个样地42种植物可划分为4个群落类型,即猪毛蒿——南牡蒿群落、野牛草——狗牙根群落、草地早熟禾群落和鬼针草——裂叶豚草群落。植物群落物种和土壤因子的CCA分析表明:猪毛蒿、南牡蒿与较高土壤速效钾和较低的土壤阳离子交换容量地对应;圆叶牵牛、葎草、鬼针草、野艾蒿、裂叶豚草、杠柳、地肤与较高的土壤速效钾、土壤总钾对应,其他物种与环境因子的关系不明显。研究结论将为永定河河滨带的生态恢复提供科学支持。Using the methods of TWINSPAN (two-way indicator species analysis) and CCA ordination (canonical correspondence analysis), the vegetation community types in the restoration process of the Yongding River riparian zone were divided, and the relationship between the spatial distribution of vegetation and soil environmental factors was analyzed, and the key factors affecting the spatial distribution of vegetation in the Yongding River riparian zone were determined. The results showed that 42 plant species in 18 plots could be divided into 4 community types, namely, Artemisia scoparia—Artemisia sphaerocephala community, Buffalo grass—Cynodon dactylon community, Kentucky bluegrass community and Bidens pilosa—Ambrosia schizonepeta community. CCA analysis of plant community species and soil factors showed that Artemisia scoparia and Artemisia sphaerocephala corresponded to higher soil available potassium and lower soil cation exchange capacity;Pyrophila rotundifolia, Humulus sphaerocephala, Bidens pilosa, Artemisia argyi, Ambrosia sphaerocephala, Periploca chinensis, and Kochia scoparia corresponded to higher soil available potassium and total soil potassium, and the relationship between other species and environmental factors was not obvious. The research conclusions will provide scientific support for the ecological restoration of the Yongding River riparian zone.

关 键 词：永定河 植物群落 双向指示种分析 典范对应分析 土壤环境因子 

分 类 号：Q94[生物学—植物学]