草业学报2025，Vol.34Issue(4)：16-26,11.DOI:10.11686/cyxb2024223
三江源不同草地类型植被及土壤微生物多样性与土壤因子特征的研究
Vegetation and soil microbial diversity and their relationships with soil factors in different grassland types of the three river headwaters region
摘要
Abstract
Grassland biodiversity is the basis for maintaining the function and stability of grassland ecosystems.Understanding the diversity of vegetation and soil microorganisms in different grassland types and their influencing factors can help to formulate scientific conservation and restoration strategies.In this study,we investigated the characteristics of vegetation and soil microbial diversity of different grassland types and analyzed their relationships with soil environmental factors by combining field vegetation community surveys and amplicon sequencing,for different grassland types in the Three-River Headwaters Region.It was found that alpine meadows,alpine steppe and temperate steppe in the Three-River Headwaters Region had significant differences in vegetation community characteristics,soil microbial diversity characteristics and soil physicochemical properties.Alpine meadows had higher vegetation cover and biomass(P＜0.05),while temperate steppe had the greatest vegetation height(P＜0.05).For soil fungi,the Faith's-pd index was significantly greater in alpine meadows than in temperate steppe and alpine steppe(P＜0.05),whereas the Simpson and Shannon—Wiener indices were significantly lower than in temperate steppe and alpine steppe(P＜0.05);and for soil bacteria,the Chao1 and Faith's-pd indices were significantly lower in alpine steppe than in temperate steppe and alpine meadows(P＜0.05),while the differences between Simpson and Shannon—Wiener indices were not significant(P＞0.05).Soil environmental factors had significant effects on vegetation and soil microbial communities in the different grassland types,among which pH,soil organic carbon content and soil total nitrogen content were one of the main factors of influence.The results of this study provide a theoretical basis for biodiversity conservation and ecological restoration of different types of grasslands in the Three-River Headwaters Region.关键词
三江源/植被特征/土壤微生物/物种多样性/高通量测序Key words
the three river headwaters region/vegetation characteristics/soil microorganism/species diversity/high-throughput sequencing引用本文复制引用
王守兴,周华坤,欧立鹏,李成先,王雁鹤,宁晓春,谷强,魏代军,杨明新..三江源不同草地类型植被及土壤微生物多样性与土壤因子特征的研究[J].草业学报,2025,34(4):16-26,11.基金项目
中国地质调查局项目(DD20220959,DD20230094)和中国地质调查局自然资源综合调查指挥中心科技创新基金(KC20220018)资助. （DD20220959,DD20230094）
