[1]孟好军,赵维俊,雷军,等.黑河流域高山草甸湿地土壤CO2通量日变化特征[J].水土保持研究,2016,23(02):189-193.
　MENG Haojun,ZHAO Weijun,LEI Jun,et al.Daily Variation Process of Soil CO2 Flux of Alpine Meadow Wetland in Heihe River Basin[J].Research of Soil and Water Conservation,2016,23(02):189-193.
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黑河流域高山草甸湿地土壤CO2通量日变化特征

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 23 期数: 2016年02期 页码: 189-193 栏目: 出版日期: 2016-04-28
Title:
Daily Variation Process of Soil CO2 Flux of Alpine Meadow Wetland in Heihe River Basin
作者:
孟好军1, 赵维俊1, 雷军1, 罗龙发2, 苗毓鑫1
1. 甘肃省祁连山水源涵养林研究院 甘肃省森林生态与冻土水文水资源重点实验室, 甘肃 张掖 734000;
2. 张掖市林业科学技术推广站, 甘肃 张掖 734000
Author(s):
MENG Haojun1, ZHAO Weijun1, LEI Jun1, LUO Longfa2, MIAO Yuxin1
1. Academy of Water Resources Conservation Forests in Qilian Mountains of Gansu Province, Key Laboratory of Hydrology and Water Resources of Forest Ecology and Frozen Soil of Gansu Province, Zhangye, Gansu 734000, China;
2. Zhangye Forestry Science and Technology Extension Station, Zhangye, Gansu 734000, China
关键词:
CO2通量; 温度; 水分; 高山草甸湿地; 黑河流域
Keywords:
CO2 flux; temperature; moisture; alpine meadow wetland; Heihe River Basin
分类号:
S154
摘要:
采用Li-6400便携式光合作用测量系统连接Li-6400-09土壤呼吸室，在2013年生长季节对黑河流域高山草甸湿地土壤CO2通量进行了野外定位试验，统计分析了水热因子对高山草甸湿地土壤CO2通量特征的影响。结果表明，高山草甸湿地区不同层次土壤的日平均温度差值由土壤表层（0 cm）的14.5℃骤降到土壤20 cm层的5.8℃，对土壤呼吸有较大的影响；土壤CO2通量日变化特征明显，早晨8：00—10：00维持在较低水平，土壤CO2通量在0.81~1.10 μmol/（m2·s），在11：00开始升高，13：00达到峰值，峰值为3.26 μmol/（m2·s），18：00开始下降，整个过程呈单峰曲线；高山草甸湿地区土壤CO2通量与10 cm土壤温度、土壤含水量存在不同程度的正相关关系，表明土壤CO2通量的变化受温度和水分所控制。
Abstract:
We used measuring system of Li-6400 portable photosynthesis to connect soil respiration chamber of Li-6400-09 in the growing season in 2013 to carry out the positioning trial about CO2 flux of alpine meadow wetland soil in Heihe Basin. We analyzed the effect of hydrothermal factors on characteristic of CO2 flux of alpine meadow wetland soil. Results showed that daily average temperature difference of different depth of soil in alpine meadow wetland area went immediately down from 14.5℃ of soil surface to 5.8℃ 20 cm depth, having further effect on soil respiration. Daily variation characteristic of soil CO2 flux is obvious, and keeping in a lower standard at 8:00—10:00 am, CO2 flux of soil is 0.81~1.10 μmol/(m2·s), beginning to rise at 11:00, reaching to the peak at 13:00, and the peak is 3.26 μmol/(m2·s), beginning to descend at 18:00, the whole process was single-peak curve; soil CO2 flux and soil temperature, soil moisture content in 10 cm depth exist different degrees of positive correlation in alpine meadow wetland areas, showing that the change of soil CO2 flux is controlled by temperature and moisture.

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备注/Memo

收稿日期:2015-03-03;改回日期:2015-04-30。
基金项目:甘肃省自然科学“黑河流域中游湿地土壤碳分布特征研究”（1308RJZG163）
作者简介:孟好军(1964-),男,甘肃张掖人,高级工程师,本科,主要从事湿地生态学和生物多样性等方面的研究。E-mail:shymenghj5619@126.com
通讯作者:赵维俊(1981-),男,甘肃靖远人,助理研究员,博士研究生,主要从事森林生态和湿地生态研究。E-mail:zhaoweijun1019@126.com

更新日期/Last Update: 1900-01-01