秸秆还田量对黑土区土壤及团聚体有机碳变化特征和 固碳效率的影响

高洪军,彭畅,张秀芝,李强,朱平,王立春

Effects of Corn Straw Returning Amounts on Carbon Sequestration Efficiency and Organic Carbon Change of Soil and Aggregate in the Black Soil Area

GAO HongJun,PENG Chang,ZHANG XiuZhi,LI Qiang,ZHU Ping,WANG LiChun

表2 土壤有机碳储量提升所需玉米秸秆投入量及相关参数

Table 2 Corn Straw input and related parameters for soil organic carbon stocks enhancement

有机碳储量 SOC stocks (t·hm-2) 每年提升碳储量 Increased SOC stocks (t·hm-2·a-1) 固碳效率 C sequestration efficiency (%) 年所需碳投入量 Carbon input (t·hm-2·a-1) 年所需投入玉米秸秆量 Corn straw input (t·hm-2·a-1) 初始值 Initial value 33 0 10年提升10% Increased by 10% over 10 years 36.3 0.33 12.9 2.56 5.99 10年提升20% Increased by 20% over 10 years 39.6 0.66 12.9 5.12 11.98 10年提升30% Increased by 30% over 10 years 42.9 0.99 12.9 7.67 17.97