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[1]程虎,许文年,向瀚宇,等.不同修复年限植被混凝土基材有机碳氧化稳定性特征[J].应用与环境生物学报,2019,25(02):232-238.[doi:10.19675/j.cnki.1006-687x.2018.12040]
 CHENG Hu,XU Wennian,XIANG Hanyu,et al.Characteristics of soil oxidizable stable organic carbon in different restoration years for substrate of eco-restoration of vegetation concrete[J].Chinese Journal of Applied & Environmental Biology,2019,25(02):232-238.[doi:10.19675/j.cnki.1006-687x.2018.12040]
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不同修复年限植被混凝土基材有机碳氧化稳定性特征
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
25卷
期数:
2019年02期
页码:
232-238
栏目:
研究论文
出版日期:
2019-04-25

文章信息/Info

Title:
Characteristics of soil oxidizable stable organic carbon in different restoration years for substrate of eco-restoration of vegetation concrete
作者:
程虎许文年向瀚宇罗婷夏栋
1三峡大学生物与制药学院 宜昌 443002 2三峡大学土木与建筑学院 宜昌 443002 3三峡大学水利与环境学院 宜昌 443002
Author(s):
CHENG Hu1 XU Wennian1 2 XIANG Hanyu1 LUO Ting1 & XIA Dong3**
1 College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang, Hubei 443002, China 2 College of Civil Engineering and Architecture, China Three Gorges University, Yichang 443002, China 3 College of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang 443002, China
关键词:
生态修复植被混凝土基材有机碳氧化稳定性氧化有机碳组分
Keywords:
ecological restoration vegetation concrete substrate of eco-restoration oxidizable stable organic carbon oxidizable organic carbon fraction
分类号:
S153.621
DOI:
10.19675/j.cnki.1006-687x.2018.12040
摘要:
为了解基材质量的变化,选择修复0、3、6、9、12和15年的基材作为研究对象,分析其微生物量碳(MBC)、总有机碳(TOC)及其氧化有机碳组分(F1:极易氧化有机碳;F2:容易氧化有机碳;F3:较易氧化有机碳;F4:难氧化有机碳)含量随修复年限的动态变化特征. 结果显示:(1)基材TOC含量在修复早期下降显著,随年限增加略有升高,其后呈下降趋势,最后趋于稳定. (2)修复9年的基材氧化有机碳组分F1、F2和MBC显著大于12年和15年;并且从修复9年至15年,F1、F2和F3组分占TOC的比例分别从32.14%、38.43%和20.07%下降至24.34%、22.59%和18.71%,F4组分由9.99%增加至32.36%. (3)相关性分析结果表明TOC与F1、F2、F3和 F4之间没有显著的相关性,而易氧化碳(ROC)与F1、F2和F3之间具有显著的正相关性(P < 0.05);MBC与ROC、F1和F2都具有显著的正相关性(P < 0.05). 本研究表明随着修复年限增加,基材有机碳的内部循环会受到阻碍,基材氧化有机碳组分可有效反映基材质量变化. (图4 表2 参44)
Abstract:
Studying the characteristics of soil oxidizable stable organic carbon in the substrate of eco-restoration of vegetation concrete from different restoration years is of great significance to understand the substrate quality over time. This study was designed to investigate the?pH, moisture content, microbial biomass carbon (MBC), total organic carbon (TOC), and characteristics of oxidizable organic carbon fraction variations in different restoration years (0, 3, 6, 9, 12 and 15 years) for substrate of eco-restoration of vegetation concrete. The characteristics of oxidizable organic carbon fraction were categorized as F1: very labile fraction of oxidizable organic; F2: labile organic carbon; F3: less liable fraction of oxidizable organic carbon; and F4: non-labile fraction of oxidizable organic carbon. The results showed that: 1) The TOC of the substrate decreased in the early restoration stage, followed by a reduction, a subsequent increase and an equilibrium state with increasing restoration age. 2) The TOC showed no significant difference between restorations of 9 and 15 years, while the F1, F2, and soil?MBC were significantly higher for restorations of 9 years than those for restorations of 12 and 15 years. Compared to the restorations of 15 years, the proportion of F1, F2, and F3 in TOC for restorations of 9 years decreased from 32.14%, 38.43%, and 20.07% to 24.34%, 22.59%, and 18.71%, respectively, while that of F4 increased from 9.99% to 32.36%. 3) The correlation analysis indicated that TOC was not related to F1, F2, F3, and F4, while the readily oxidizable carbon (ROC) had a significant positive relation to F1, F2, and F3 (P < 0.05). The MBC had a significant positive correlation with ROC, F1, and F2 (P < 0.05). The study showed that the internal circulation of the substrate organic carbon was increasingly hindered by repair aging. The oxidized organic carbon fractions of the substrate can adequately reflect the change of substrate quality.

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