| 不同植被类型下草本群落与土壤因子的关系 |
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| 引用本文： | 逯金鑫,,高 飞,周荣磊,刘洋洋,温仲明.不同植被类型下草本群落与土壤因子的关系[J].水土保持研究,2023,30(3):310-317,326. |
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| 作者姓名： | 逯金鑫 高 飞 周荣磊 刘洋洋 温仲明 |
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| 作者单位： | (1.中国科学院 水利部 水土保持研究所, 陕西 杨凌 712100; 2.西北农林科技大学 草业与草原学院, 陕西 杨凌 712100) |
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| 基金项目： | 国家自然科学基金“黄土丘陵沟壑区植被水沙拦蓄效率变化与水文连通性响应”(4197071873)； |
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| 摘 要： | 目的]在黄土高原大规模植被恢复重建的背景下，揭示贴地草本群落与耕作层土壤理化性质的协同发育及相互关系对恢复植被的可持续性发展尤为重要。方法]以陕北绥德辛店沟小流域不同植被恢复类型下草本群落为研究对象，通过野外布设样方采集土壤标本，测定群落盖度，物种信息等指标，辅以室内试验和统计分析的办法，分析了不同植被类型下草本群落特征、土壤因子及其响应关系。结果](1)陕北小流域不同植被恢复类型下草本层的Margalef丰富度指数、Simpson优势度指数、Shannon-Wiener多样性指数、Pielou均匀度指数四项指数总体差异显著，荒地、灌丛地>乔灌混交林>人工草地、乔木林(p<0.05)。(2)土壤因子与草本群落生物量、群落盖度、叶功能性状呈现出显著相关关系(p<0.05),且在不同植被类型下草地样方的响应中南坡优于北坡。(3) RDA排序分析发现，土壤有机碳、全氮、全磷含量、土壤容重和土壤最大持水量是影响草本群落生长发育的关键因子。结论]灌丛地、乔灌混交林和荒地中草地生态稳定性及水土保持功能性优于其他植被恢复模式。
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| 关 键 词： | 植被恢复 群落多样性 辛店沟小流域 土壤养分 生物量 |
Relationship Between Herbaceous Communities and Soil Nutrients Under Different Vegetation Types |
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| LU Jinxin,,GAO Fei,ZHOU Ronglei,LIU Yangyang,WEN Zhongming.Relationship Between Herbaceous Communities and Soil Nutrients Under Different Vegetation Types[J].Research of Soil and Water Conservation,2023,30(3):310-317,326. |
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| Authors: | LU Jinxin GAO Fei ZHOU Ronglei LIU Yangyang WEN Zhongming |
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| Institution: | (1.Institute of Soil and Water Conservation, CAS & MWR, Yangling, Shaanxi 712100, China; 2.College of Grassland and Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China) |
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| Abstract: | Objective]In the context of large-scale revegetation of the Loess Plateau, it is essential for the sustainability of the revegetation to reveal the synergistic development and interrelationship between the physical and chemical properties of the adjacent herbaceous communities and the soil in the cultivated layer. Methods] Herbaceous communities in Xindian watershed of Suide in northern Shaanxi were examined under different types of plant restoration. Soil samples were collected by establishing field plots, measuring community cover, species information, and other indicators. Herbaceous community characteristics, soil factors, and their response relationships under various vegetation types were examined through indoor experiments and statistical analysis. Results](1)The Margalef richness index, Simpson dominance index, Shannon-Wiener diversity index, and Pielou evenness index of the herbaceous layer under various vegetation restoration types in the northern Shaanxi sub-basin differed significantly, with wasteland and scrubland>mixed tree and shrub forest>planted grassland and tree forest(p<0.05).(2)Soil parameters had significant associations with herbaceous community biomass, community coverage, and leaf functional characteristics(p<0.05), and grassland samples were more responsive to different vegetation types on southern slopes than on northern slopes.(3)The RDA ranking analysis revealed that soil organic carbon, total nitrogen, total phosphorus content, soil bulk, and maximum soil water holding capacity were the most influential factors in herbaceous community growth and development. Conclusion] The ecological stability and soil and water conservation functions of grassland in scrubland, mixed tree and irrigation forest, and wasteland were superior to those of other methods of restoring vegetation. |
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| Keywords: | vegetation restoration community diversity Xindian watershed soil nutrients biomass |
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