| 摘要: |
| 以天然气地下管道工程竣工后的砒砂岩及沙地为研究对象，探讨经4年封育及人工种草恢复后的土壤修复效果及植物多样性特征。结果表明：（1）砒砂岩及沙地土地类型上共有29个植物种，以多年生草本植物为主。封育恢复4年后，砒砂岩及沙地的植物群落均处于进展演替的初级阶段。相比人工种草恢复，封育恢复可更好地增加沙地植物丰富度及多样性。（2）砒砂岩土壤全氮及有机碳含量仅在封育恢复后高于天然草地，而沙地经封育及人工种草恢复方式后，土壤全氮及有机碳含量均高于天然草地。封育及人工种草恢复方式有助于改善管道工程迹地土壤养分状况及提升植物多样性。 |
| 关键词: 管道工程 植物多样性 土地类型 恢复方式 土壤修复 |
| DOI：10.14188/j.ajsh.2020.06.013 |
| 分类号:X826 |
| 基金项目: |
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| Soil remediation effect and plant characteristics of pipeline project site |
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ZHOU Quansheng, LI Chao, YE Tao
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Beijing Larkworld Environmental Protection Technology Co.， Ltd.， Beijing 100081， China
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| Abstract: |
| In order to investigate plant diversity and soil remediation of feldspathic sandstone （FS） and sandy land （SL） after the completion of natural gas underground pipeline project， 4-year fenced restoration （FR） and artificial restoration （AR） were carried out， and natural grassland was taken as the control （CK）. Results showed that： （1） there was a progressive succession after 4-year restoration reflected by 29 species and mainly perennial herbaceous species in FS and SL land types， and compared with AR， FR was better to promote plant diversity and richness of SL； （2） soil organic carbon （SOC） and total nitrogen （TN） of SL were higher than those of CK after FR and AR， but SOC and TN of FS were higher than those of CK only after FR. This study helps to improve soil nutrients and plant diversity in pipeline project sites. |
| Key words: pipeline project plant diversity land type restoration soil remediation |
