天津两种城市绿地土壤微生物与土壤呼吸特征

doi:10.14088/j.cnki.issn0439-8114.2019.22.012

湖北农业科学 ›› 2019, Vol. 58 ›› Issue (22): 49-53.doi: 10.14088/j.cnki.issn0439-8114.2019.22.012

天津两种城市绿地土壤微生物与土壤呼吸特征

魏佳宇, 吴忠亮, 陈鑫童, 王淼, 赵亮玉, 孙浩然, 李德生

天津理工大学环境科学与安全工程学院,天津 300384

收稿日期:2019-03-22 出版日期:2019-11-25 发布日期:2019-12-09
通讯作者: 李德生（1964-）,男, 教授,博士,主要从事城市环境与城市生态教学及科研工作,（电话）15902296331（电子信箱）deshli@tjut.edu.cn。
作者简介:魏佳宇（1996-）,女,山西大同人,在读本科生,（电话）15900385099（电子信箱）1136238313@qq.com。
基金资助:
国家自然科学基金项目（41303057）; 天津市大学生创新创业训练计划项目（201710060049）

Soil microorganism and soil respiration characteristics of two kinds urban green space in Tianjin

WEI Jia-yu, WU Zhong-liang, CHEN Xin-tong, WANG Miao, ZHAO Liang-yu, SUN Hao-ran, LI De-sheng

School of Environmental Science and Safety Engineering,Tianjin University of Technology,Tianjin 300384,China

Received:2019-03-22 Online:2019-11-25 Published:2019-12-09

摘要/Abstract

摘要： 对天津两种城市绿地国槐梨树林和国槐银杏林在6月、7月、8月土壤碳排放速率和土壤微生物数量进行测定,旨在深入了解土壤呼吸速率动态变化特征及其影响因子。结果表明,两种城市绿地土壤呼吸昼夜变化明显,土壤碳排放量白天大于夜间,且白天变异幅度比夜间大,观测期国槐梨树林和国槐银杏林土壤呼吸速率变异幅度分别为4.01和4.76,月均最大值均出现在8月;国槐梨树林和国槐银杏林土壤呼吸速率均值分别是2.01、1.94 μmol/（m²·s）,表明国槐梨树林比国槐银杏林土壤碳排放量大;两种城市绿地土壤微生物数量表现为国槐梨树林>国槐银杏林,土壤细菌与土壤呼吸速率之间呈极显著正相关,土壤放线菌和真菌与土壤呼吸速率间呈显著正相关。

关键词: 城市绿地, 土壤呼吸, 昼夜变化, 土壤微生物

Abstract: Soil carbon emission rates and soil microbial populations of two urban green space in Tianjin Sophora japonica Linn.-Pyrus i, f. woods and Sophora japonica Linn.-Ginkgo biloba L. woods were determined in June, July and August to determine soil respiration dynamics and its influencing factors. The results showed that day and night variation of soil respiration in two types of urban green spaces was obvious. Soil carbon emission was greater during the daytime than at night, and the daytime variation range was greater than that at night. During the observation period, the soil respiration rate variation of Sophora japonica Linn.-Pyrus i, f. woods was 4.01, and the soil respiration rate variation of Sophora japonica Linn.-Ginkgo biloba L. woods was 4.76, and the average monthly maximum occurred in August. The average soil respiration rates of Sophora japonica Linn.-Pyrus i, f. woods and Sophora japonica Linn.-Ginkgo biloba L. woods were 2.01 and 1.94 μmol/（m²·s）, respectively. This indicated that Sinkgo japonica Linn.-Pyrus i, f. woods had a higher carbon emission than Sophora japonica Linn.-Ginkgo biloba L. woods. The total amount of soil microbes was greater in Sophora japonica Linn.-Pyrus i, f. woods. There was extremely obvious correlation between the seasonal changes of soil respiration rate and the number of soil bacterium. Soil respiration rate were significantly positive to actinomycetes and fungi.

Key words: urban green space, soil respiration rate, day and night variation, soil microorganism

中图分类号:

S731.2

魏佳宇, 吴忠亮, 陈鑫童, 王淼, 赵亮玉, 孙浩然, 李德生. 天津两种城市绿地土壤微生物与土壤呼吸特征[J]. 湖北农业科学, 2019, 58(22): 49-53.

WEI Jia-yu, WU Zhong-liang, CHEN Xin-tong, WANG Miao, ZHAO Liang-yu, SUN Hao-ran, LI De-sheng. Soil microorganism and soil respiration characteristics of two kinds urban green space in Tianjin[J]. HUBEI AGRICULTURAL SCIENCES, 2019, 58(22): 49-53.

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天津两种城市绿地土壤微生物与土壤呼吸特征

Soil microorganism and soil respiration characteristics of two kinds urban green space in Tianjin

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