文献类型：期刊文献

英文题名：The Linkage of Soil CO2 Emissions in a Moso Bamboo (Phyllostachys edulis (Carriere) J. Houzeau) Plantation with Aboveground and Belowground Stoichiometry

作者：Tian, Xiaokun[1,2] Ge, Xiaogai[1,2] Zhou, Benzhi[1,2] Li, Maihe[3]

第一作者：Tian, Xiaokun

通信作者：Ge, XG[1];Ge, XG[2]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Peoples R China;[2]Natl Forestry & Grassland Adm, Qianjiangyuan Forest Ecosyst Res Stn, Hangzhou 311400, Peoples R China;[3]Swiss Fed Inst Forest Snow & Landscape Res WSL, Zuercherstr 111, CH-8903 Birmensdorf, Switzerland

年份：2021

卷号：12

期号：8

外文期刊名：FORESTS

收录：;EI(收录号：20213410794001);Scopus(收录号：2-s2.0-85112758087);WOS:【SCI-EXPANDED(收录号:WOS:000690472700001)】；

基金：We thank anonymous reviewers for helpful comments that improved the original manuscript. This study was supported by the Fundamental Research Funds for the Central Non-profit Research Institution (CAFYBB2020ZE001, CAFYBB2018SY015, CAFYBB2018GB001), National Natural Science Foundation of China (32071756 and 31600492), and Qianjiangyuan National Forest Ecological Research Station.

语种：英文

外文关键词：ecological stoichiometry; moso bamboo; plant tissues; soil microbes; soil respiration

摘要：Understanding the effects of soil stoichiometry and nutrient resorption on soil CO2 emissions is critical for predicting forest ecosystem nutritional demands and limitations tooptimal forest growth. In this study, we examined the effects of above- and belowground stoichiometry on soil CO2 emissions and their mediating effect on soil respiration in subtropical moso bamboo (Phyllostachys edulis) plantations. Our results showed that the soil respiration rate did not differ significantly among four bamboo stands. Nitrogen (N) and phosphorous (P) concentrations were higher in bamboo leaves than litter, whereas the C:N and C:P ratios showed the opposite trend. Significant positive correlations of soil cumulative CO2 emission with litter C:P (p = 0.012) and N:P (p = 0.041) ratios indicated that litter stoichiometry was a better predictor of soil respiration than aboveground stoichiometry. Cumulative soil CO2 emissions were significantly negatively correlated with soil microbe C:N (p = 0.021) and C:N (p = 0.036) ratios, and with soil respiratory quotients (p < 0.001). These results suggest that litter and soil stoichiometry are reliable indicators of the soil respiration rate. This study provides important information about the effects of ecosystem stoichiometry and soil microbial biomass on soil CO2 emissions and highlights them editing role of soil nutritional demands and limitations in the association between soil respiration rates and aboveground plant tissues.