荒漠草地土壤微生物生物量和微生物熵对沙漠化的响应

Translated title of the contribution: Response of soil microbial biomass and microbial entropy to desertification in desert grassland

Xiu Zhi Wu, Bing Ru Liu, Xin Yan, Ren Tao Liu, Hui An

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

采用空间序列代替时间演替的方法,分析宁夏中北部盐池县荒漠草地不同沙漠化阶段(荒漠草地、固定沙地、半固定沙地和流动沙地)土壤微生物生物量(SMB)和微生物熵(qMB)的变化特征及其影响因子.结果表明: 从荒漠草地到流动沙地,土壤微生物生物量碳、氮、磷分别降低46.1%、80.8%和30.0%.随着荒漠草地沙漠化程度的加剧,土壤微生物熵碳(qMBC)、土壤微生物熵氮(qMBN)、土壤微生物熵磷(qMBP)均表现为荒漠草地>固定沙地>半固定沙地>流动沙地,而土壤-微生物化学计量不平衡性(C:Nimb、C:Pimb、N:Pimb)基本呈增加趋势.土壤微生物生物量氮与C:Nimb呈显著正相关,与N:Pimb呈显著负相关;土壤微生物生物量磷与C:Pimb呈显著正相关.冗余分析(RDA)显示,土壤生态化学计量(C:N、C:P)对微生物熵碳的负效应最明显.荒漠草地沙漠化显著影响土壤微生物生物量和微生物熵.

Translated title of the contributionResponse of soil microbial biomass and microbial entropy to desertification in desert grassland
Original languageChinese (Simplified)
Pages (from-to)2691-2698
Number of pages8
JournalChinese Journal of Applied Ecology
Volume30
Issue number8
DOIs
StatePublished - 1 Aug 2019
Externally publishedYes

Keywords

  • desert grassland
  • desertification
  • microbial entropy
  • soil microbial biomass
  • stoichio-metry imbalance

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