太湖梅梁湾冬季水-气界面二氧化碳通量日变化观测研究

生态学杂志 ›› 2005, Vol. ›› Issue (12): 1425-1429.

太湖梅梁湾冬季水-气界面二氧化碳通量日变化观测研究

李香华¹, 胡维平², 杨龙元², 张发兵³, 胡志新^2,4

1. 江苏省水文水资源勘测局南京分局, 南京, 210008;
2. 中国科学院南京地理与湖泊研究所, 南京, 210008;
3. 上海市环境监测中心, 上海, 200030;
4. 中国科学院研究生院, 北京, 100039

收稿日期:2004-12-13 修回日期:2005-02-28 出版日期:2005-12-10
基金资助:
中国科学院知识创新工程项目(ZCX1-SW-01-15)和国家自然科学基金资助项目(40271100).

Diurnal variation of carbon dioxide flux on water-air interface of Meiliang Bay,Taihu Lake in wintertime

LI Xianghua¹, HU Weiping², YANG Longyuan², ZHANG Fabing³, HU Zhixin^2,4

1. Jiangsu Hydrology & Resources Sunkry Bureau, Nanjing Branch, Nanjing 210008, China;
2. Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China;
3. Shangnai Environmental Monitoring Centre, Shanghai 200030, China;
4. Graduate School of Chinese Academy of Sciences, Beijing 100039, China

Received:2004-12-13 Revised:2005-02-28 Online:2005-12-10

摘要/Abstract

摘要： 应用静态箱式法对太湖梅梁湖区冬季(2003年12月23日8:00～26日6:00)的水气界面CO₂通量进行了昼夜连续观测,共测得60组数据,分析了梅梁湾湖区CO₂通量的冬季日变化规律。结果表明,在光照条件较好,风速较小情况下,白天梅梁湾湖区为CO₂的汇,极大值出现在14:00时,其平均CO₂通量为-3.01 mg·m^-2·h^-1;夜间梅梁湾湖区CO₂通量值为-0.897～1.006 mg·m^-2·h^-1,其平均通量为-0.02 mg·m^-2·h^-1;在阴天、风速较大时,湖区CO₂通量日变化与前面有较大差异,表现为CO₂的强源,最大CO₂通量达到76.53 mg·m^-2·h^-1。

关键词: 植被动态, 群落结构, 生物多样性, 气候变化, 植被响应

Abstract: Employing statistic box method,this paper monitored 72 h continuously the diurnal variation of carbon dioxide flux on the water-air interface of Meiliang Bay,Taihu Lake in wintertime.The results showed that in clear and breezy days,water was the sink of atmospheric carbon dioxide at daytime,and its carbon dioxide flux was about zero at night,with the mean values of carbon dioxide flux being -3.01 and-0.02 mg穖^-2穐^-1,respectively.But,in cloudy days and after a durative gale,water was a strong source of atmospheric carbon dioxide,with the maximum value 76.53 mg穖^-2穐^-1.It could be concluded that wind speed had a significant effect on CO₂ flux in wintertime.

Key words: vegetation dynamic, community structure, biodiversity, climate change, vegetaion response.

中图分类号:

Q148

李香华, 胡维平, 杨龙元, 张发兵, 胡志新. 太湖梅梁湾冬季水-气界面二氧化碳通量日变化观测研究[J]. 生态学杂志, 2005, (12): 1425-1429.

LI Xianghua, HU Weiping, YANG Longyuan, ZHANG Fabing, HU Zhixin. Diurnal variation of carbon dioxide flux on water-air interface of Meiliang Bay,Taihu Lake in wintertime[J]. cje, 2005, (12): 1425-1429.

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