CORE
🇺🇦
make metadata, not war
Services
Services overview
Explore all CORE services
Access to raw data
API
Dataset
FastSync
Content discovery
Recommender
Discovery
OAI identifiers
OAI Resolver
Managing content
Dashboard
Bespoke contracts
Consultancy services
Support us
Support us
Membership
Sponsorship
Community governance
Advisory Board
Board of supporters
Research network
About
About us
Our mission
Team
Blog
FAQs
Contact us
Responses of soil microbial biomass C and N and respiratory quotient(qCO_2) to revegetation on the Loess Hilly-Gully region
Authors
安韶山
薛虹
黄懿梅
Publication date
1 January 2009
Publisher
Abstract
以野外样地调查和室内分析法研究了黄土丘陵区不同植被恢复年限下草地土壤微生物C、N及土壤呼吸熵的变化。结果表明,土壤微生物量碳明显地随着植被恢复年限的增加而增加。在恢复前23a,土壤微生物量碳在0~20cm土层年增加率为24.1%;20~40cm为104.4%。植被恢复23a后,0~20cm土层增长率为0.83%,20~40cm为0.19%。土壤微生物量N表现为在植被恢复的初期略有下降,3a后,开始出现明显增加。0~20cm土层年增长率为20.14%,20~40cm为15.11%。在植被恢复23a后,0~20cm土层的年增长率为0.14%,20~40cm变化不大。土壤微生物呼吸强度随着恢复年限的增加逐渐加强;土壤呼吸熵随植被封育时间的增加而呈对数降低趋势。土壤呼吸熵(qCO2)在反映土壤的生物质量变化时,显得更加稳定,受植物生长状况影响较小。相关分析表明,土壤微生物量和土壤微生物活性与土壤有机质、碱解氮和粘粒含量显著正相关;与土壤粉粒含量明显负相关;表层土壤pH值对其也有明显影响。草地植被自然恢复过程可增加土壤微生物活性,有利于土壤质量的提高
Similar works
Full text
Available Versions
Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:ir.iswc.ac.cn/:361005/276
Last time updated on 21/09/2018