Different plant covers change soil respiration and its sources in subtropics |
| |
Authors: | Wenjuan?Huang Juxiu?Liu Tianfeng?Han Deqiang?Zhang Shaojun?Huang Email author" target="_blank">Guoyi?ZhouEmail author |
| |
Institution: | 1.Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden,Chinese Academy of Sciences,Guangzhou,China;2.Management School,Ji Nan University,Guangzhou,China |
| |
Abstract: | Heterotrophic soil respiration (R H) and autotrophic soil respiration (R A) by a trenching method were monitored in four vegetation types in subtropical China from November 2011 to October 2012. The four vegetation types included a shrubland, a mixed-conifer, a mixed-legume, and a mixed-native species. The average R H was significantly greater in soils under the mixed-legume and the mixed-native species than in the shrubland and the mixed-conifer soils, and it affected the pattern of soil total respiration (R S) of the four soils. The change in R H was closely related to the variations of soil organic C, total N and P content, and microbial biomass C. The R A and the percentage of R S respired as R A were only significantly increased by the mixed-native species after reforestation. Probably, this depended on the highest fine root biomass of mixed-native species than the other vegetation types. Soil respiration sources were differently influenced by the reforestation due to different changes in soil chemical and biological properties and root biomass. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|