北京地区暖温带森林土壤温室气体排放规律  

The Research on the Law of Greenhouse Gases Emission from Warm Temperate Forest Soils in Beijing Region

作　　者：杜睿[1] 黄建辉[2] 万小伟[1] 贾月慧[3] 

机构地区：[1]中国科学院大气物理研究所,北京100029 [2]中国科学院植物研究所 [3]北京农学院

出　　处：《环境科学》2004年第2期12-16,共5页Environmental Science

基　　金：国家自然科学基金项目 (4 0 0 0 5 0 0 9;40 0 75 0 2 8);中国科学院大气物理所创新领域前沿项目(8 3 3 0 5 )

摘　　要：本研究利用静态箱法在北京市东灵山暖温带森林生长期选择 3种不同类型的森林 (阔叶混交林、辽东栎林和油松林 )的土壤进行了温室气体 (CH4、CO2 和N2 O)排放规律的野外原位观测 .研究结果表明 :暖温带主要代表森林类型的土壤作为CH4的汇吸收大气中的CH4,同时作为CO2 和N2 O的源向大气排放 .观测结果显示 :不同的森林土壤类型其温室气体排放通量、范围各不相同 ,阔叶混交林土壤CH4、CO2 和N2 O通量范围分别是 :4 2～ 10 3μg/ (m2 ·h) ,15～ 344mg/ (m2 ·h)和 - 6 1～ 10 1μg/ (m2 ·h) ;辽东栎林土壤 3种气体通量范围分别是 :13～ 182 μg/ (m2 ·h) ,2 3～ 380mg/ (m2 ·h)和 - 15～ 183μg/ (m2 ·h) ;油松林土壤 3种气体通量范围分别是 :12～ 12 8μg/ (m2 ·h) ,15～ 2 92mg/ (m2 ·h)和 - 94～ 15 3μg/ (m2 ·h) .观测期内阔叶混交林土壤CH4、CO2 和N2 O平均通量分别是 :- 6 6 μg/ (m2 ·h) ,14 5mg/ (m2 ·h)和 2 2 μg/ (m2 ·h) ;辽东栎林土壤 3种气体平均通量分别是 :- 6 7μg/ (m2 ·h) ,14 6mg/ (m2 ·h)和 4 5 μg/ (m2 ·h) ;油松林土壤 3种气体平均通量分别是 :- 79μg/ (m2 ·h) ,15 0mg/ (m2 ·h)和 31μg/ (m2 ·h) .In situ measurements by closed chamber technique were done to investigate the law of greenhouse gases ( Methane, carbon dioxide and Nitrous Oxide) fluxes emission from different warm temperate forest soils (Broad leaved forest, Form. Quercus liaotungensis and Form. Pinus tabulae ) of Dongling mountain in Beijing region. Results show that the all representative types forest soils were sink of CH 4 and source of CO 2 and N 2O. Different type of vegetables and soils result of different fluxes range of the main greenhouse gases. The fluxes range of CH 4, CO 2 and N 2O emission from the three types forest soils were: 42～103μg/(m 2·h),15～344mg/(m 2·h) and -61～101μg/(m 2·h); 13～182μgCH 4/m 2·h, 23～380mg/(m 2·h) and -15～183μg/(m 2·h); 12～128 ugCH 4/m 2·h,15～292mg/(m 2·h) and -94～153 μg/(m 2·h); respectively. The mean fluxes of CH 4, CO 2 and N 2O emission from the three types forest soils during the observation period were: -66 μg/(m 2·h), 145mg/(m 2·h) and 22 μg/(m 2·h); -67 μg/(m 2·h), 146mg/(m 2·h) and 45μg/(m 2·h); -79 μg/(m 2·h), 150mg/(m 2·h) and 31μg/(m 2·h), respectively. The total amounts of CH 4 CO 2 and N 2O emission from the three types forest soils were -5 34kg/(hm 2·a), 13 9Mg/(hm 2·a) and 2 58kg/(hm 2·a); -6 20 kg/(hm 2·a), 14 07Mg/(hm 2·a) and 4 19kg/(hm 2·a); -6 85kg/(hm 2·a), 15 71Mg/(hm 2·a) and 4 30kg/(hm 2·a), respectively.

关 键 词：东灵山 暖温带森林土壤 温室气体 通量 

分 类 号：X511[环境科学与工程—环境工程]