Characteristics of Soil Trace Elements and Vegetation and Their Relationships in Degraded Alpine Steppe in Sanjiangyuan Region

doi:10.11733/j.issn.1007-0435.2022.08.001

Acta Agrestia Sinica ›› 2022, Vol. 30 ›› Issue (8): 1925-1933.DOI: 10.11733/j.issn.1007-0435.2022.08.001

Characteristics of Soil Trace Elements and Vegetation and Their Relationships in Degraded Alpine Steppe in Sanjiangyuan Region

XIAO Hai-long¹, MA Yuan², ZHOU Hui-cheng¹, ZHANG Cheng-jun³, YAO Yu-jiao¹, CHEN Jian-gang¹, ZHANG De-gang¹

1. College of Pratacultural Science, Gansu Agricultural University; Key Laboratory of Grassland Ecosystem of Education Ministry; China-US Center for Grazing Land Ecosystem Sustainability, Lanzhou, Gansu Province 730070, China;
2. Qinghai Academy of Animal and Veterinary Sciences, Qinghai University, Xining, Qinghai Province 810016, China;
3. Academy of Agricultural Sciences, Dingxi, Gansu Province 743000, China

Received:2022-01-30 Revised:2022-03-14 Published:2022-09-01

三江源退化高寒草原土壤微量元素与植被特征及其关系

肖海龙¹, 马源², 周会程¹, 张成君³, 姚玉娇¹, 陈建纲¹, 张德罡¹

1. 甘肃农业大学草业学院, 草业生态系统教育部重点实验室, 中-美草地畜牧业可持续研究中心, 甘肃兰州 730070;
2. 青海大学畜牧兽医科学院, 青海西宁 810016;
3. 甘肃省定西市农业科学研究院, 甘肃定西 743000

通讯作者: 张德罡,E-mail:zhangdg@gsau.edu.cn
作者简介:肖海龙(1995-),男,甘肃玉门人,硕士研究生,主要从事草地资源与生态研究,E-mail:1366378487@qq.com
基金资助:
国家重点研发计划项目（2016YFC0501902）；甘肃省自然科学基金项目（20JR10RA525）资助

Abstract

Abstract: In order to explore soil trace elements and vegetation characteristics and their relationships in alpine steppe under different degradation degrees in Sanjiangyuan region,the alpine steppe at different degradation degrees in Maduo County of Qinghai Province were selected as the research areas to investigate. The vegetation community characteristics,the contents of soil trace elements (Fe,Mn,Cu,Zn,B,Mo,Se),and the key soil trace elements affecting the degradation of alpine grassland vegetation community were analyzed. The results showed that with the aggravation of alpine steppe degradation,the grassland coverage gradually decreased,and the diversity,richness and aboveground biomass first increased and then decreased. The content of trace elements in soil showed a downward trend;the characteristics of vegetation community were positively correlated with contents of iron,manganese,copper,zinc,boron and selenium in soil,especially with the contents of iron,copper and boron.

Key words: Sanjiangyuan region, Alpine steppe, Grassland degradation, Soil, Trace elements

摘要： 为探究三江源不同退化程度高寒草原土壤微量元素与植被特征及其关系，以青海省玛多县地区不同退化程度高寒草原为研究对象，调查植被群落特征，测定土壤微量元素(铁、锰、铜、锌、硼、钼、硒)含量，分析影响高寒草原植被群落退化的关键土壤微量元素。研究结果表明：随着高寒草原退化的加剧，草地盖度逐渐降低，草地多样性、丰富度、地上生物量呈先升高后降低趋势；土壤中微量元素的含量均呈下降趋势；植被群落特征与土壤中铁、锰、铜、锌、硼、硒含量正相关，其中与土壤铁、有效铜、有效硼的含量的关系最为密切。

关键词: 三江源, 高寒草原, 草地退化, 土壤, 微量元素

CLC Number:

S938.1+3

XIAO Hai-long, MA Yuan, ZHOU Hui-cheng, ZHANG Cheng-jun, YAO Yu-jiao, CHEN Jian-gang, ZHANG De-gang. Characteristics of Soil Trace Elements and Vegetation and Their Relationships in Degraded Alpine Steppe in Sanjiangyuan Region[J]. Acta Agrestia Sinica, 2022, 30(8): 1925-1933.

肖海龙, 马源, 周会程, 张成君, 姚玉娇, 陈建纲, 张德罡. 三江源退化高寒草原土壤微量元素与植被特征及其关系[J]. 草地学报, 2022, 30(8): 1925-1933.

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Characteristics of Soil Trace Elements and Vegetation and Their Relationships in Degraded Alpine Steppe in Sanjiangyuan Region

三江源退化高寒草原土壤微量元素与植被特征及其关系

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