|
|||||
|
|
| 外源硅酸钙对棕壤基础呼吸和碳酸钙含量的影响 | |
| 引用本文： | 张昀,邵帅,关连珠﹡,颜丽,何琳,赵凯.外源硅酸钙对棕壤基础呼吸和碳酸钙含量的影响[J].中国土壤与肥料,2012(3):40-42. |
| 作者姓名： | 张昀 邵帅 关连珠﹡ 颜丽 何琳 赵凯 |
| 作者单位： | 1. 沈阳农业大学土地与环境学院,辽宁沈阳,110866 2. 辽宁省辽河保护区管理局,辽宁沈阳,110002 3. 辽宁省朝阳市建平县农业技术推广中心,辽宁朝阳,122400 |
| 基金项目： | 国家自然科学基金资助项目 |
| 摘 要： | 采用室内模拟培养的方法,研究了添加硅酸钙对棕壤基础呼吸和碳酸钙含量的影响,为土壤固碳的技术选择提供理论依据。试验设硅酸钙添加量0%、1%、2%、4%和6%5个处理。结果表明,外源硅酸钙在培养前期显著抑制土壤呼吸,其抑制程度随着硅酸钙添加量的增加而增加,平均抑制率为5%(1%处理)～12%(6%处理);整个培养期间,添加硅酸钙处理的土壤碳酸钙含量较对照显著增加,且随着添加量的增加,土壤碳酸钙含量的平均增幅从83%(1%处理)上升到398%(6%处理);土壤呼吸强度和碳酸钙含量之间符合y=Ae-Bx的指数相关关系。上述结果表明,施用硅酸钙通过促进次生碳酸盐的形成从而缓解土壤CO2释放,起到固碳减排的作用。 |
| 关 键 词： | 硅酸钙 土壤呼吸 土壤碳酸盐 固碳 |
| 收稿时间： | 2012/1/7 0:00:00 |
| 修稿时间： | 2012/2/14 0:00:00 |
Impacts of calcium silicate addition on brown earth basal respiration and calcium carbonate content |
|
| ZHANG Yun,SHAO Shuai,GUAN Lianzhu,YAN Li,HE Lin,ZHAO Kai.Impacts of calcium silicate addition on brown earth basal respiration and calcium carbonate content[J].Soil and Fertilizer Sciences in China,2012(3):40-42. | |
| Authors: | ZHANG Yun SHAO Shuai GUAN Lianzhu YAN Li HE Lin ZHAO Kai |
| Institution: | 1.Shenyang Agriculture University,College of Land and Environment,Shenyang 110866;2.Liaoning Province Liaohe River Reserve Authority,Shenyang 110002;3.Liaoning Province Chaoyang City Service Center for Agricultural Technology,Chaoyang 122400) |
| Abstract: | Impacts of exogenous calcium silicate addition on brown earth basal respiration and calcium carbonate content were investigated through an incubation experiment.The treatments included calcium carbonate addition rates of 0%,1%,2%,4% and 6%.Results showed that calcium silicate addition significantly decreased soil respiration during the early incubation,and the mean inhibition rates increased from 5% in 1% treatment to 12% in 6% treatment.Across the incubation,calcium silicate addition significantly increased soil calcium carbonate content,and the increase magnitude increased from 83% in 1% treatment to 398% in 6% treatment.Soil respiration(y)and calcium silicate content(x)showed the significant relationship of y=Ae-Bx.The results demonstrate that calcium carbonate addition could mitigate soil CO2 emission by promoting formation of soil secondary carbonate. |
| Keywords: | calcium silicate soil respiration soil carbonate carbon sequestration |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《中国土壤与肥料》浏览原始摘要信息 | |
| 点击此处可从《中国土壤与肥料》下载免费的PDF全文 | |