大气CO2浓度升高对水稻秸秆化学组成的影响

doi:10.13287/j.1001-9332.201908.041

应用生态学报 ›› 2019, Vol. 30 ›› Issue (8): 2717-2724.doi: 10.13287/j.1001-9332.201908.041

大气CO₂浓度升高对水稻秸秆化学组成的影响

石梦园¹, 郁红艳^1*, 邹路易¹, 滕跃¹, 朱春梧²

¹江南大学环境与土木工程学院/江苏省厌氧生物技术重点实验室, 江苏无锡 214122;
²中国科学院南京土壤研究所, 南京 210008

收稿日期:2018-09-19 出版日期:2019-08-15 发布日期:2019-08-15
通讯作者: * E-mail: hyyu@jiangnan.edu.cn
作者简介:石梦园,女,1994年生,硕士研究生.主要从事环境生态研究.E-mail:6161402008@vip.jiangnan.edu.cn
基金资助:
江南大学自主科研计划青年基金项目(JUSRP11525)、国家自然科学基金项目(21307043)和中国博士后基金项目(2016M590411)

Effects of elevated atmospheric CO₂ concentration on chemical composition of rice straw

SHI Meng-yuan¹, YU Hong-yan^1*, ZOU Lu-yi¹, TENG Yue¹, ZHU Chun-wu²

¹Jiangsu Key Laboratory of Anaerobic Biotechnology/School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, Jiangsu, China;
²Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.

Received:2018-09-19 Online:2019-08-15 Published:2019-08-15
Contact: * E-mail: hyyu@jiangnan.edu.cn

摘要/Abstract

摘要： 水稻秸秆是生物能源生产的潜在材料,大气二氧化碳(CO₂)浓度升高改变水稻秸秆的量和质,从而改变其生物能源的生产潜力.本试验水稻秸秆来自中国自由大气CO₂富集平台(FACE),选取FACE平台(试验组CO₂浓度控制在570 μmol ·mol^-1左右,比对照组高200 μmol ·mol^-1)3种水稻品种‘武运粳27’、‘Y两优900’和‘日本晴N16’,通过对秸秆化学组成进行分析,探讨CO₂浓度升高对水稻秸秆质量的影响.结果表明: 大气CO₂浓度升高显著提高了水稻秸秆C含量和C/N;增加了秸秆中非结构碳水化合物含量;CO₂浓度升高使武运粳27、Y两优900和N16秸秆中释放的总糖分别增加8.8%、6.7%和9.9%;CO₂浓度升高显著提高N16秸秆生物量,但对其他两种水稻秸秆生物量没有显著影响;N16的总糖产量在CO₂浓度升高下增加最显著,达到19.2%.表明CO₂浓度升高可以改善水稻秸秆质和量,从而提高生物燃料利用潜能.

Abstract: Rice straw is a potential material for bioenergy production. Elevated atmospheric carbon dioxide (CO₂) concentration changed the quantity and quality of rice straw, thus changing its bioenergy production potential. In this experiment, we collected rice straw from China Free Air CO₂ Enrichment Platform (FACE). Three rice varieties, Wuyunjing 27, Y Liangyou 900 and Nipponbare N16, were selected from the FACE platform (the CO₂ concentration in the experimental group was controlled at 570 μmol ·mol^-1, which was 200 μmol ·mol^-1 higher than the control group), the chemical composition of which was analyzed. The results showed that elevated CO₂ concentration significantly increased C content, C/N, and the content of non-structural carbohydrates in straw. Elevated CO₂ concentration significantly increased total sugar release by 8.8%, 6.7% and 9.9% in Wuyunjing 27, Y liangyou 900 and N16, respectively. Elevated CO₂ concentration significantly enhanced the biomass of N16 straw, but had no effect on the straw biomass of the other two rice varieties. The total sugar yield of N16 increased most significantly with elevated CO₂ concentration, reaching 19.2%. Our results indicated that elevated CO₂ concentration could improve the quality and quantity of rice straw, thereby increasing the utilization potential of biofuel.

石梦园, 郁红艳, 邹路易, 滕跃, 朱春梧. 大气CO₂浓度升高对水稻秸秆化学组成的影响[J]. 应用生态学报, 2019, 30(8): 2717-2724.

SHI Meng-yuan, YU Hong-yan, ZOU Lu-yi, TENG Yue, ZHU Chun-wu. Effects of elevated atmospheric CO₂ concentration on chemical composition of rice straw[J]. Chinese Journal of Applied Ecology, 2019, 30(8): 2717-2724.

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大气CO₂浓度升高对水稻秸秆化学组成的影响

Effects of elevated atmospheric CO₂ concentration on chemical composition of rice straw

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