The Analysis on Ecosystem Multifunctional Indexes of Different Alpine Grassland Communities

doi:10.11733/j.issn.1007-0435.2023.08.029

Acta Agrestia Sinica ›› 2023, Vol. 31 ›› Issue (8): 2505-2515.DOI: 10.11733/j.issn.1007-0435.2023.08.029

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The Analysis on Ecosystem Multifunctional Indexes of Different Alpine Grassland Communities

DENG De-ting¹, WU Yu-kun^1,2, LAI Feng³, SUN Jian-cai^1,4, SHI Hui-lan¹

1. College of Eco-Environmental Engineering, Qinghai University, Xining, Qinghai Province 810016, China;
2. College of Resources and Environmental Sciences, China Agricultural University, Beijing 100083, China;
3. Qinghai Provincial Natural Resources Survey and Monitoring Institute, Xining, Qinghai Province 810000, China;
4. College of Agriculture, Ningxia University, Yinchuan, Ningxia 750021, China

Received:2023-02-06 Revised:2023-03-14 Online:2023-08-15 Published:2023-09-01

不同高寒草地植物群落生态系统多功能性分析

邓得婷¹, 武玉坤^1,2, 赖锋³, 孙建财^1,4, 史惠兰¹

1. 青海大学生态环境工程学院, 青海西宁 810016;
2. 中国农业大学资源与环境学院, 北京 100083;
3. 青海省自然资源综合调查监测院, 青海西宁 810000;
4. 宁夏大学农学院, 宁夏银川 750021

通讯作者: 史惠兰,E-mail:hlshi7701@126.com
作者简介:邓得婷(1997-),女,青海互助人,硕士研究生,主要从事草地生态学研究,E-mail:youyu_456456@qq.com
基金资助:
青海省科技厅基础研究项目(2021-ZJ-715)；2021年促进与加澳新及拉美地区科研合作与高层次人才培养项目(留金美[2021]109号)；青海大学第六批“教学名师”培育项目(青大校教字[2013]73号)；青海大学三江源一流学科核心课程《生态系统管理》(ZYHX-202208)；青海大学三江源生态一流学科大学生创新项目(2022-stxy-B35)资助

Abstract

Abstract: Five typical plant communities were selected in this research in order to study the relationship between the ecosystem multifunctionalities and environmental impact factors. The five typical plant communities respectively were the Elymus nutans community (EN),Kobresia humilis community (KH),Kobresia pygmaea community (KP),Kobresia tibetica community (KT) and Ligularia virgaurea degraded grassland community (DG),which located in Henan County,Huangnan Prefecture,Qinghai Province. The ecosystem functional indexes and productivity index (PI),carbon cycle index (CI),nitrogen cycle index (NI),phosphorus cycle index (PCI) and ecosystem multifunctional function index(EMFI) were measured and calculated,as while as calculated the relative weight of each functional index,and analyzed the relationship between soil factors and each index. Among the typical five plant communities,the biomass,soil nutrient,plant nutrient content,ecosystem single function index and EMFI of KT community were higher,while these indicators was relatively lower in KP community. Soil bulk density was negatively correlated with EMFI,and soil temperature was positively correlated with ecosystem single function index and EMFI. Soil moisture,soil moisture,soil conductivity were negatively correlated with CI. Therefore,the study found out that different soil factors and vegetation traits had different effects on ecosystem versatility in Alpine grassland.

Key words: Alpine grassland, Ecosystem multifunctionality, Productivity index, Carbon cycle index, Nitrogen cycle index, Phosphorus cycle index

摘要： 为探究不同高寒草地植物群落的生态系统多功能性及其环境影响因子，本研究以青海省河南县五种典型植物群落：垂穗披碱草(Elymus nutans，EN)人工群落、矮嵩草(Kobresia humilis，KH)原生群落、小嵩草(Kobresia pygmaea，KP)原生群落、藏嵩草(Kobresia tibetica，KT)沼泽化群落、黄帚橐吾(Ligularia virgaurea)退化草地(Degraded grassland，DG)群落为研究对象，选取表征生态系统功能的指标与土壤理化性质指标，测定并计算生态系统单一功能指数与多功能指数(Ecosystem multifunctional index，EMFI)，分析土壤因子与各指数间的关系。五种植物群落中KT群落生物量、土壤养分、植物养分含量和生态系统单一功能指数、EMFI较高，KP群落相对较低，土壤容重与EMFI呈现负相关关系，土壤温度与生态系统单一功能指数、EMFI均呈现正相关关系。土壤湿度、水分、电导率与CI呈负相关关系，研究发现典型高寒草地群落中不同的土壤因子和植被性状对生态系统多功能性的影响不同。

关键词: 高寒草地, 生态系统多功能指数, 生产力指数, 碳循环指数, 氮循环指数, 磷循环指数

CLC Number:

S812

DENG De-ting, WU Yu-kun, LAI Feng, SUN Jian-cai, SHI Hui-lan. The Analysis on Ecosystem Multifunctional Indexes of Different Alpine Grassland Communities[J]. Acta Agrestia Sinica, 2023, 31(8): 2505-2515.

邓得婷, 武玉坤, 赖锋, 孙建财, 史惠兰. 不同高寒草地植物群落生态系统多功能性分析[J]. 草地学报, 2023, 31(8): 2505-2515.

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The Analysis on Ecosystem Multifunctional Indexes of Different Alpine Grassland Communities

不同高寒草地植物群落生态系统多功能性分析

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