The amount of released C02 of soil of five land-use types in North China Plain
To probe the effect of five land-use types of wood land(Wood LA) and wheat land(Wheat LA) of agro-forestry model, poplar bare land(PBL),poplar plantation abandoned land(PPAL) and wheat land(WL) on the growth of C02 and the change of the amount of released C02 of soil between October 2009 and March 2010,the licor-8100 Automated Soil C02 Flux System was utilized to monitor the change of carbon flux of soil from the five land-use types. The soil respiration (Rs) of them was studied systematically. The results showed that amplitude of variation of Rs diurnal variation of five land-use types became smaller gradually first and then larger from October 2009 to March 2010. The value of Rs in daytime was bigger than that in nighttime. The amount of released C02 0f soil was the highest in October 2009 with the value of 13.82 t·hm-2, which is the 36％ of total amount of six months. The lowest was in January 2010 with the value of 2.62 t·hm-2, 7％ of the total. The amount was the highest in Wood LA with the value of 8.77 t·hm-2mon-1. the contribution to total amount was 23％. The lowest amount was in Wheat LA and PBL with the value of 6.57 t·hm-2mon-1. 5.82 t·hm-2mon-1. 15％ and 17％ of total respectively. Illustrating that Wheat LA and PBL could slow the rate of released C02 0f soil effectively in autumn and in winter.
North China Plain land-use type the amount of soil released C02
Gao Dong Lu Shaowei Rao Liangyi
College of Soil and Water Conservation,Beijing Forestry University, Key Laboratory for Soil and Water Conservation & Desertification Combating of Ministry of Education, Beijing 100083,P.R.China
国际会议
西安
英文
293-298
2010-10-11（万方平台首次上网日期，不代表论文的发表时间）