黑碳不同添加量对土壤有机碳矿化的影响  

Effects of Different Addition Rate of Black Carbon on Soil Organic Carbon Mineralization

作　　者：李淑香[1] 李芳芳[1] 

机构地区：[1]福建师范大学地理科学学院,福建福州350007

出　　处：《安徽农业科学》2011年第36期22395-22396,22500,共3页Journal of Anhui Agricultural Sciences

基　　金：福建省自然科学基金项目(2010J01248)

摘　　要：[目的]探讨黑碳不同添加量对土壤有机碳矿化的影响。[方法]将350℃下制备的黑碳分别以0%(BC0)、1%(BC1)、2%(BC2)、3%(BC3)、4%(BC4)和5%(BC5)6个不同用量添加到土壤中,恒温25℃培养56 d。[结果]在整个培养过程中,土壤CO2释放速率和土壤CO2-C累积释放量均表现为BC5>BC4>BC3>BC2>BC1。培养至56 d,BC分解率介于0.24%～2.12%。[结论]黑碳对维持土壤碳库平衡具有重要的作用。[ Objective [ The study aimed to study the effects of addition rate of black carbon on soil organic carbon mineralization. [ Method J BC was produced by charring the rice straw under 350 ~C and was mixed into soil with different addition rate （ BC0, BC1, BC2, BC3, BC4, BC5, respectively）, and incubated for 56 days at 25 ℃. [ Results] During the whole incubation period, soil CO2 releasing rate and the accu- mulation amount of soil CO2-C changed with the following order： BC5 〉 BCA 〉 BC3 〉 BC2 〉 BC1. After 56 days of incubation, the decomposi- tion rate of black carbon ranged from O. 24% to 2.12%. [ Conclusion] Black carbon was of great importance in maintaining the balance of soil carbon pool.

关 键 词：黑碳 添加量 碳矿化 

分 类 号：S153[农业科学—土壤学]