CAI Nan,SUN Xu,LIU Yonghong.Soil Nutrient Distribution Characteristics of Different Plant Communities in Baotou Yellow River Wetland[J].Northern Horticulture,2021,(10):80-87.[doi:10.11937/bfyy.20204141]
包头黄河湿地不同植物群落土壤养分分布特征
- Title:
- Soil Nutrient Distribution Characteristics of Different Plant Communities in Baotou Yellow River Wetland
- Keywords:
- plant community; soil nutrient; spatial distribution; Yellow River wetlands in Baotou city
- 文献标志码:
- A
- 摘要:
- 以盐爪爪、扁秆藨草、碱蓬、芦苇和冷蒿为研究对象，采用野外取样与室内试验相结合的方法，对土壤理化性质进行测定,探究包头黄河湿地5种植物群落下土壤养分的空间分布特征及其影响因素,以期为黄河湿地的保护与生态修复提供技术支持。结果表明：1）各植物群落土壤容重随土层深度增加而逐渐降低，土壤总孔隙度、含水量与之相反；2）各植物群落下土壤pH和全盐量均随土层深度增加而逐渐降低，具有明显的表聚作用；3）各植物群落土壤有机质、全氮和全磷随土层深度增加而逐渐增大，而全钾无统一变化规律；4）相关分析发现，土壤容重、含水量、pH、全盐量不利于土壤养分积累，土壤总孔隙度有利于土壤养分积累；5）各植物群落土壤养分处于缺或极缺状态，说明研究区土壤养分相对贫瘠。
- Abstract:
- Kalidium foliatum,Bolboschoenus planiculmis,Suaeda glauca,Phragmites australis and Artemisia frigida were used as research objects,soil physical and chemical properties were determined using a combination of field sampling and indoor experiments,to investigate spatial distribution characteristics of soil nutrients under five kinds of plant communities in Yellow River wetlands of Baotou city,and factors that affected accumulation of soil nutrients were studied.In order to provide technical support for protection and ecological restoration of Yellow River wetland.The results showed that,1) soil bulk density of plant communities gradually decreased with soil depth,while the reverse was found for total porosity and water moisture of soil;2) soil pH and total salt content of plant communities gradually decreased with soil depth,which had obvious surface accumulation effect;3) soil organic matter,total nitrogen and total phosphorus gradually increased with soil depth in all plant communities,while there was no uniform pattern of change in total potassium;4) correlation analysis showed that soil bulk density,water moisture,pH and total salt content were not conducive to soil nutrient accumulation,while soil total porosity was beneficial to soil nutrient accumulation;5) soil nutrients of five plant communities were infertile.
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备注/Memo
第一作者简介：蔡楠（1995-），女，硕士研究生，研究方向为土地资源管理。E-mail:1318552919@qq.com.责任作者：孙旭（1964-），男，硕士，副教授，硕士生导师，现主要从事土地资源管理等研究工作。E-mail:1637772590@qq.com.基金项目：内蒙古包头黄河湿地生态系统国家定位观测研究站运行补助资助项目（2019132008）。收稿日期：2020-09-24