中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 若尔盖高原沼泽湿地与草地二氧化碳通量的比较 应用生态学报 2008,19 (2) 285-289
Position: Home > Articles > CO_2 fluxes in mire and grassland on Ruoergai plateau Chinese Journal of Applied Ecology 2008,19 (2) 285-289

若尔盖高原沼泽湿地与草地二氧化碳通量的比较

作  者：
王德宣;宋长春;王毅勇;赵志春
单  位：
中国科学院东北地理与农业生态研究所
关键词：
CO_2通量;若尔盖高原;沼泽湿地;草地
摘  要：
采用静止箱/气相色谱法,在2003—2005年的植物生长期对若尔盖高原沼泽湿地和草地的CO2通量进行了对比观测.结果表明:若尔盖高原沼泽湿地和草地CO2通量的平均值分别为203.22和323.03mg.m-2.h-1,前者为后者的60%左右.沼泽湿地常年积水的环境条件限制了土壤中的植物残体、根系及有机物质的分解,是沼泽湿地CO2通量低于草地并形成泥炭积累的重要因素.研究区沼泽湿地与草地CO2通量的季节变化与气温变化呈正相关,峰值一般出现在7月和8月;其日变化也与气温呈正相关,峰值一般出现在11:00—17:00.5cm深的土壤温度与CO2通量的相关性高于10和15cm深的土壤温度.
译  名：
CO_2 fluxes in mire and grassland on Ruoergai plateau
作  者：
WANG De-xuan,SONG Chang-chun,WANG Yi-yong,ZHAO Zhi-chun(Northeast Institute of Geography and Agricultural Ecology,Chinese Academy of Sciences,Changchun 130012,China)
关键词：
CO_2 flux;Ruoergai plateau;mire;grassland
摘  要：
With closed chamber and GC technique,a comparative study was conducted on the CO2 fluxes in mire and grassland on Ruoergai plateau during the plant growth period in 2003-2005.The results showed that the mean value of the CO2 fluxes in the three years was 203.22 mg·m-2·h-1 in mire and 323.03 mg·m-2·h-1 in grassland,with the former being only about 60% of the latter.The perennially water-logging of mire limited the decomposition of plant residues,roots and organic substances,resulting in a lower CO2 flux in mire than in grassland.The seasonal changes of CO2 fluxes in mire and grassland were positively correlated with air temperature,the peak value being usually appeared in July or August,and the diurnal changes of the CO2 fluxes were also positively correlated with air temperature,the peak value being usually appeared between 11:00 and 17:00.The CO2 fluxes had a higher correlation with the soil temperature at the depth of 5 cm than at the depths of 10 cm and 15 cm.

相似文章

导出引用
计量
文章访问数: 7
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46