文献类型：期刊文献

英文题名：RETRACTED ARTICLE: Diurnal dynamic characteristics of soil respiration and environmental controls during winter in urban lawn ecosystem, Northeast China

作者：Fan, Zhiping[1,2] Wang, Qiong[1,2] Chu, Jianmin[3] Jing, Hongshuang[2] Sun, Xuekai[2,4]

第一作者：Fan, Zhiping

通信作者：Fan, Z.

机构：[1] Institute of Eco-environmental Sciences, Liaoning University of Petroleum and Chemical Technology, Fushun, China; [2] Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China; [3] Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China; [4] Graduate University, Chinese Academy of Sciences, Beijing, China

年份：2011

外文期刊名：5th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2011

收录：EI(收录号：20112814141725)

语种：英文

外文关键词：Biomedical engineering - Budget control - Carbon dioxide - Forestry - Rain - Temperature

摘要：Soil respiration diurnal dynamics during winter is important for accurately estimating annual carbon budgets, modeling the effects of urban vegetations on soil carbon storage. We conducted field experiments in urban lawn in Shenyang, north China, to measure soil respiration diurnal dynamics during winter. Our results indicated that, in sunny day diurnal soil respiration fluctuations showed relatively high single-peak curves and asymmetric patterns, with minimum and maximum occurring in early morning 0.3 μmol CO2 m-2 s-1 (3:00-7:00) and mid-day 1.29 μmol CO2 m -2 s-1 (10:00-15:00), respectively. No obvious diurnal trends in soil respiration rates were observed on cloudy day, during and after the rainfall events days. Daily average CO2 efflux of sunny day, cloudy day, rainy day and the day after rainfall was 0.80, 0.35, 1.48 and 0.86 μmol CO2 m-2 s-1, respectively. Soil respiration rate and soil temperatures at 10 cm depth exhibited strong exponential relationships and can be described by the equations Rs=0.14614e 0.208T (R2=0.52, P10=8.13). The diurnal variation in soil respiration had significant correlation with daily soil volumetric water content at 5 cm depth and can be described by the equations Rs=a+bw (R2=0.65, P