氮磷添加对杉木人工林土壤N_2O排放的影响  

Influence of Nitrogen and Phosphorus Fertilizers on Soil N_2O Emissions in Chinese Fir Plantation Ecosystem

作　　者：王亮[1] 李子君[1] 王建雷[2] 

机构地区：[1]山东师范大学人口.资源与环境学院,山东济南250014 [2]中国科学院地理科学与资源研究所生态网络观测与模拟重点实验室千烟洲生态试验站,北京100101

出　　处：《安徽农业科学》2015年第4期69-72,共4页Journal of Anhui Agricultural Sciences

基　　金：国家973计划项目(2012CB416900)

摘　　要：[目的]研究氮磷添加对杉木人工林土壤N2O排放的影响。[方法]采用静态箱-气相色谱法,研究空白对照(CK)、低氮(N1)、高氮(N2)、磷添加(P)、低氮加磷(N1P)和高氮加磷(N2P)这6种施肥处理对杉木人工林土壤N2O排放的影响。[结果]土壤N2O的排放主要受施肥及土壤温度影响,而土壤湿度与土壤N2O之间相关性不显著。土壤N2O排放季节差异较大量,夏季占全年的67%,其他3个季节之间差距较小。N1、P和N1P处理对土壤N2O排放的促进作用不显著,N2和N2P能显著增加土壤N2O的排放。[结论]该研究可为杉木人工林的合理施肥及减少森林土壤N2O的排放提供科学依据。[Objective]The influence of fertilizers on soil N2 O emissions in Chinese fir plantation ecosystem was studied. [Method]Using the method of static chamber-gas chromatograph techniques,the fertilizer treatments were designed as blank（CK）,low nitrogen（N1）,high nitrogen（N2）,phosphorus（P）,low nitrogen and phosphorus（N1P） and high nitrogen and phosphorus（N2P）. [Result]The results showed that soil N2 O emission is mainly influenced by fertilization and soil temperature,but don＇t significant correlation with moisture. Seasonal variation of soil N2 O emission is relatively large,the summer reached 67% of annual and the gap between the other three seasons is small. It don＇t have significant facilitation to the soil N2 O emissions that N1,P and N1 P treatment. But N2 and N2 P treatment could significantly increase soil N2 O emission. [Conclusion]The results can be used as the scientific basis that reasonable fertilization and reduce forest of Chinese fir plantation soil N2 O emissions.

关 键 词：N2O排放 氮添加 磷添加 杉木人工林 

分 类 号：S791.27[农业科学—林木遗传育种]