[1]瞿红云,贾国梅,向瀚宇,等.植被混凝土边坡修复基质易氧化有机碳组分季节动态[J].水土保持研究,2019,26(05):28-33.
　QU Hongyun,JIA Guomei,XIANG Hanyu,et al.Seasonal Dynamics of Soil Oxidizable Organic Carbon Fractions in Substrate of Eco-Restoration of Vegetation Concrete[J].Research of Soil and Water Conservation,2019,26(05):28-33.
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植被混凝土边坡修复基质易氧化有机碳组分季节动态

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 26 期数: 2019年05期 页码: 28-33 栏目: 出版日期: 2019-09-06
Title:
Seasonal Dynamics of Soil Oxidizable Organic Carbon Fractions in Substrate of Eco-Restoration of Vegetation Concrete
作者:
瞿红云1, 贾国梅1,2, 向瀚宇1, 岳云飞1
1. 三峡大学 生物与制药学院, 湖北 宜昌 443002;
2. 三峡大学 三峡地区生态保护与治理国际联合研究中心, 湖北 宜昌 443002
Author(s):
QU Hongyun1, JIA Guomei1,2, XIANG Hanyu1, YUE Yunfei1
1. College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang, Hubei 443002, China;
2. Hubei International Center for Ecological Protection and Management in the Three Gorges Area, Yichang, Hubei 443002, China
关键词:
土壤; 易氧化有机碳组分; 季节变化; 驱动因素; 植被混凝土边坡修复
Keywords:
soil; oxidizable organic carbon fraction; seasonal dynamics; driving factor; eco-restoration of vegetation concrete
分类号:
S153.6+21
摘要:
易氧化有机碳组分能够敏感指示土壤质量的变化。为探讨植被混凝土边坡修复基质易氧化有机碳组分季节变化特征及其驱动因子，以2个修复年限的植被混凝土边坡修复基质为研究对象，测定4个季节的易氧化有机碳组分（F1：高氧化活性有机碳；F2：中氧化活性有机碳；F3：低氧化活性有机碳；F4：难氧化有机碳），揭示易氧化有机碳组分变化的的驱动因子。结果表明：易氧化有机碳组分及其占总有机碳的百分比具有明显季节动态。F1表现为夏季最低冬季最高；F2最高值出现在夏季而最低值出现在冬季；F3表现为春、秋、冬显著性高于夏季，F4表现为春、夏季显著低于秋、冬季。但是夏季的（F1+F2）/TOC最高，且春季高于秋、冬季，（F3+F4）/TOC变化规律则相反。这说明有机碳在春、夏季活性高，秋、冬季稳定性强。对于4个易氧化有机碳组分，土壤有机碳春、秋、冬季主要以F1为主，而F2在夏季含量最高，因此，F1可作为衡量基质质量状况的良好指标。冗余分析发现：气候因子是驱动易氧化有机碳及其组分变化的主要因素，同时边坡坡度以及基质的理化性质也是重要影响因素，这些因素主要驱动F1和F2组分的季节动态。
Abstract:
Soil oxidizable organic carbon fractions can sensitively respond to variations in soil quality. In order to investigate the seasonal dynamics of soil oxidizable organic carbon fractions and their driving factors in substrate of eco-restoration of vegetation concrete, the concentration of oxidizable organic carbon fractions (F1, F2, F3 and F4) of eco-restoration of vegetation concrete were determined. The results showed that F1 was the lowest in the summer and highest in the winter, respectively, F2 was highest in the summer and lowest in the winter, respectively.F3 was lowest in the summer, F4 was significantly lower both in the spring and summer than those both in the autumn and winter; (F1+F2)/TOC was higher in the spring and the summer than that in the autumn and winter, and (F3+F4)/TOC was reversed, indicating that organic carbon was labile in spring and summer, respectively, and was stable in autumn and winter, respectively; F1 was the highest in spring, autumn and winter, respectively, and F2 was the highest in summer among four fractions, indicating that F1 can be used as a sensitive indicator for the changes in soil quality. Redundancy analysis showed that changes in climatic, physicochemical properties of sabstrate and slope gradient were the main factors that governed the seasonal dynamics of soil oxidizable organic carbon fractions, especially F1 and F2 fractions.

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备注/Memo

收稿日期:2019-02-24;改回日期:2019-03-21。
基金项目:国家自然科学基金应急管理项目“消落带土壤甲烷氧化菌群落的生态位分异特征及其对水位消涨的响应机理”（51541903）
作者简介:瞿红云(1992-),女(土家族),湖北利川人,硕士研究生,主要从事环境生态学研究。E-mail:2450009405@qq.com
通讯作者:贾国梅(1965-),女,甘肃永登人,博士,教授,主要从事土壤生态学研究。E-mail:jjjgm@126.com

更新日期/Last Update: 1900-01-01