长白山四种林分土壤CO2释放通量的研究

生态学杂志 ›› 2004, Vol. ›› Issue (5): 42-45.

长白山四种林分土壤CO₂释放通量的研究

林丽莎^1,2, 韩士杰¹, 王跃思³, 谷志静¹

1. 中国科学院沈阳应用生态研究所, 沈阳, 110016;
2. 中国科学院研究生院, 北京, 100039;
3. 中国科学院大气物理研究所, 北京, 100029

收稿日期:2003-11-26 修回日期:2004-02-23 出版日期:2004-10-10
通讯作者: 韩士杰
基金资助:
中国科学院知识创新工程重大项目(KZCX1-SW-01);国家重点基础研究发展规划资助项目(2002CB412502)

Soil CO₂ flux in several typical forests of Mt.Changbai

LIN Lisha^1,2, HAN Shijie¹, WANG Yuesi³, GU Zhijing¹

1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China;
3. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China

Received:2003-11-26 Revised:2004-02-23 Online:2004-10-10

摘要/Abstract

摘要： 对长白山地区4种典型林分下土壤释放CO₂通量的研究表明,在较短的时间尺度上,4种林型在CO₂释放通量上有显著的差别,各林型CO₂通量的释放表现出明显的空间异质性,其释放顺序为:山杨白桦混交林>原始阔叶红松林>白桦林>山杨林,其中山杨白桦混交林对CO₂释放的贡献最大,而山杨林最小。4种林分土壤CO₂通量的全日变化过程并不一致,除山杨白桦混交林和气温有较一致性的规律,呈较明显的单峰型外,其余并无明显的变化规律。凋落物对林地CO₂释放通量的变化有显著的影响,有凋落物覆盖的林地土壤CO₂释放量明显大于无凋落物覆盖的林地,其平均通量为262.86～556.55mgC·m^-2·h^-1,而无凋落物覆盖林地土壤CO₂的平均通量为20585～39569mg·m^-2·h^-1。凋落物排放CO₂量占林地总排放量的14%～30%,并且改变了林地CO₂释放通量大小的排序。

关键词: 缺苞箭竹, 土壤养分库, 速效养分动态, 密度

Abstract: The soil CO₂ flux of four temperate forest types was studied in Mt.Changbai. The soil CO₂ flux in the four typical forests was significantly different at short time scale. The released CO₂ flux of the four typical forest indicated obvious spatial heterogeneity. The rate of released CO₂ flux was the highest in Populus-Betula mixed forest and the lowest in populus forest. The sequence was: Populus-Betula mixed forest > broad leaved-Korean pine forest > Betula forest > Populus forest. Daily course of soil CO₂ flux was very different in the four forest types. Except for Populus-Betula mixed forest, in which the changes of CO₂ flux exhibited a single peak and showed relative consistency with changes of temperature, there were no regular changes of CO₂ flux in other forest types. The litter influenced the CO₂ flux significantly in each forest type. The CO₂ flux in the forest where soil was covered with litter was higher than that with out litter. The average value was 262.86～556.55 mgC·m^-2·h^-1 in the forests with the litter and 205.85～395.69 mg·m^-2·h^-1 in the forests without litter. The contribution of litter to total soil CO₂ flux was 14 %to 30%.

Key words: Fargesiadenudata, Soil nutrient pool, Available nutrient dynamics, Density

中图分类号:

S152.6

林丽莎, 韩士杰, 王跃思, 谷志静. 长白山四种林分土壤CO₂释放通量的研究[J]. 生态学杂志, 2004, (5): 42-45.

LIN Lisha, HAN Shijie, WANG Yuesi, GU Zhijing. Soil CO₂ flux in several typical forests of Mt.Changbai[J]. cje, 2004, (5): 42-45.

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长白山四种林分土壤CO₂释放通量的研究

Soil CO₂ flux in several typical forests of Mt.Changbai

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