| 煤矿复垦区不同修复年限林下草本群落特征及其与土壤耦合关系 |
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| 引用本文： | 高瑞,艾宁,刘广全,刘长海,强方方.煤矿复垦区不同修复年限林下草本群落特征及其与土壤耦合关系[J].草业学报,2022,31(6):61-68. |
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| 作者姓名： | 高瑞 艾宁 刘广全 刘长海 强方方 |
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| 作者单位： | 1.延安大学生命科学学院，陕西省红枣重点实验室，陕西 延安 716000;2.中国水利水电科学研究院，北京 100038 |
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| 基金项目： | 延安市科技计划项目;国家自然科学基金;国家重点研发计划;IWHR基本科研业务费专项项目 |
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| 摘 要： | 为了解鄂尔多斯聚鑫龙煤矿不同修复年限林下草本植物群落特征及其与土壤因子的耦合关系，以修复年限为3~7年的林下草本植物群落与土壤因子为研究对象，并以人工草地和撂荒地作为对照，调查不同样地草本群落物种组成及其土壤理化性质，并利用灰色关联耦合模型法对草本植物群落与土壤因子的关系进行研究，探明二者的响应机制。结果表明：1）研究区共调查草本植物种类55种，其中主要以禾本科、菊科和豆科为主，三者共占比为60%。2）随着修复年限增加，林下草本植物种数呈现先减少后增加的趋势，且逐渐接近于人工草地的植物种数；草本群落的Margalef指数和Shannon-Wiener指数均呈现出先下降后上升的趋势，而Pielou指数和Simpson指数变化不明显。3）研究区草本植物群落多样性与土壤粉粒、砂粒、pH和土壤容重关系较为密切。4）研究区草本植物的多样性与土壤的耦合协调程度随修复年限增加呈现“升高-降低-升高”的变化趋势，其中修复7年样地的草本植物与土壤耦合度最高（0.72），为中度协调。研究表明研究区林下草本植物多样性与土壤系统的协调程度表现出良性发展的趋势，但还未达到最佳的协调程度。
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| 关 键 词： | 煤矿复垦区 草本植物 物种多样性 灰色关联耦合模型 |
| 收稿时间： | 2021-04-20 |
| 修稿时间： | 2021-06-01 |
Characteristics of understory herb communities across time during restoration in coal mine reclamation areas and their coupling with soil properties |
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| GAO Rui,AI Ning,LIU Guang-quan,LIU Chang-hai,QIANG Fang-fang.Characteristics of understory herb communities across time during restoration in coal mine reclamation areas and their coupling with soil properties[J].Acta Prataculturae Sinica,2022,31(6):61-68. |
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| Authors: | GAO Rui AI Ning LIU Guang-quan LIU Chang-hai QIANG Fang-fang |
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| Institution: | 1.School of Life Sciences，Yan’an University，Key Laboratory of Red Dates of Shaanxi Province，Yan’an 716000，China;2.China Institute of Water Resources and Hydropower Research，Beijing 100038，China |
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| Abstract: | This research studied the understory herbaceous plant communities and associated soil factors over years 3-7 of a restoration process at Juxinlong Coal Mine， Ordos Basin， in order to understand the characteristics of understory herbaceous plant communities and their coupling with soil factors across time during the site restoration. Nearby managed grassland and abandoned grassland plots were used as controls. The species composition and soil physical and chemical properties of herbaceous communities in different plots were investigated， and the relationships between herbaceous plant communities and soil factors， and the response mechanisms were studied using the grey correlation coupling model. It was found that： 1） A total of 55 species of herbaceous plants were present in the study area， and 60% of the species present belonged to the families Poaceae， Asteraceae and Fabaceae. 2） With the passage of time during restoration， the number of understory herbaceous plants initially decreased and then increased， and gradually approached to the number of plant species in managed grassland. The Margalef index and Shannon-Wiener index of the studied plots also showed a trend of initial decrease and then increase， while the Pielou index and Simpson index did not change significantly over time. 3） The diversity of herbaceous plant communities in the study area was closely related to soil silt and gravel content， and to soil pH and bulk density. 4） The degree of coupling and correlation between herbaceous plant diversity and soil properties in the study area followed a pattern of “increase-decrease-increase” with the passage of time during the restoration. Among the collected data， the coupling between herbaceous plants and soil in the sample plots after seven years restoration was the highest （R=0.72）. In summary， the correlation between understory herbaceous plant diversity and soil properties in the studied plots exhibited gradual development， but after seven years has not yet reached its climax. |
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| Keywords: | coal mine reclamation area herbaceous plants species diversity gray relational coupling model |
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