川中丘陵区旱地小麦生态系统CO2、N2O和CH4排放特征

生态学杂志 ›› 2005, Vol. ›› Issue (2): 131-135.

川中丘陵区旱地小麦生态系统CO₂、N₂O和CH₄排放特征

张中杰^1,2, 朱波¹, 江长胜³, 韩广轩¹, 高美荣¹

1. 中国科学院成都山地灾害与环境研究所, 成都, 610041;
2. 西南农业大学资源与环境学院, 重庆, 400716;
3. 中国科学院大气物理研究所, 北京, 100029

收稿日期:2003-11-07 修回日期:2004-02-23 出版日期:2005-02-10
通讯作者: 朱波
基金资助:
中国科学院知识创新工程重大项目(KZCX1-SW-01-01B);国家自然科学基金重点资助项目(40331014)。

CO₂,N₂O and CH₄ emission from dry-land wheat ecosystem in hilly area of central Sichuan Basin

ZHANG Zhongjie^1,2, ZHU Bo¹, JIANG Changsheng³, HAN Guangxuan¹, GAO Meirong¹

1. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China;
2. College of Resource and Environment, Southwest Agricultural University, Chongqing 400716, China;
3. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China

Received:2003-11-07 Revised:2004-02-23 Online:2005-02-10

摘要/Abstract

摘要： 利用静态箱/气相色谱法观测川中丘陵旱地小麦生态系统CO₂、N₂O和CH₄的排放通量。结果表明,旱地小麦CO₂、N₂O和CH₄排放具有明显的日变化和季节变化特征。在小麦的整个生长季中,常规、无氮、空白、裸地等实验处理的CO₂、N₂O和CH₄的排放通量具有显著差异。CO₂排放通量表现为常规>空白>裸地,CO₂日最高排放值在每日13:00～15:00时出现,最低排放值出现在凌晨3:00～6:00,且作物的不同生长季CO₂排放通量具有一定的差异。在小麦生长季中,N₂O通量排放呈递增趋势,N₂O排放通量表现为常规>空白>裸地。旱地小麦CH₄通量排放和温度、湿度等环境因子不具有显著的相关性,排放无规律。

关键词: 印楝素, 斜纹夜蛾, 生物活性, 拒食作用

Abstract: CO₂,N₂O and CH₄ emission from dry-land wheat ecosystem were measured by static chamber-gas chromatographic techniques in hilly area of central Sichuan Basin. The results showed that CO₂,N₂O and CH₄ emission from wheat ecosystem changed remarkably daily and seasonally. During the whole growth stage of wheat,CO₂,N₂O and CH₄ emission fluxes in different experimental treatments had significant differences. The maximal daily emission flux of CO₂ appeared at 1:00～3:00 p.m.,and the minimum volume appeared at 3:00～6:00 a.m.The emission fluxes of CO₂ were different during the growth stages of wheat. N₂O emission increased with wheat growth.Meanwhile,N₂O was emitted as follow:general nitrogen fertilizer application > no nitrogen fertilizer application > bare land. The maximal and the minimum daily changing of N₂O emerged at different time in the different growing stage. The change of CH₄ volume from dry-land wheat was not obviously related to temperature,humidity and other environmental factors.It showed that the CH₄ emission was no regular.

Key words: Azadirachtin, Spodoptera litura, Bioactivity, Anti-feeding effect

中图分类号:

S152

张中杰, 朱波, 江长胜, 韩广轩, 高美荣. 川中丘陵区旱地小麦生态系统CO₂、N₂O和CH₄排放特征[J]. 生态学杂志, 2005, (2): 131-135.

ZHANG Zhongjie, ZHU Bo, JIANG Changsheng, HAN Guangxuan, GAO Meirong. CO₂,N₂O and CH₄ emission from dry-land wheat ecosystem in hilly area of central Sichuan Basin[J]. cje, 2005, (2): 131-135.

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川中丘陵区旱地小麦生态系统CO₂、N₂O和CH₄排放特征

CO₂,N₂O and CH₄ emission from dry-land wheat ecosystem in hilly area of central Sichuan Basin

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