青海周边地区土壤碳汇潜力评价(增刊)
投稿时间:2016-04-29  修订日期:2016-04-29  点此下载全文
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作者单位E-mail
张亚峰 青海省第五地质矿产勘查院 371221815@qq.com 
马强 青海省第五地质矿产勘查院  
姬丙艳 青海省第五地质矿产勘查院  
姚振 青海省第五地质矿产勘查院  
代璐 青海省第五地质矿产勘查院  
田兴元 青海省第五地质矿产勘查院  
基金项目:国土资源部行业《中国主要农耕区土壤碳库及固碳潜力研究-栗钙土固碳机制试验研究》(200911020-13)资助。
中文摘要:本文以土壤有机碳为研究对象,以多目标调查数据和二普数据为基础,计算土壤碳储量变化,对青海周边主要农牧区土壤碳汇潜力进行评价。结果表明,青海周边主要农牧区20年来土壤碳储量变化特征各异,东部农耕区呈减少趋势,划定为碳源区;环青海湖北部牧业区呈上升趋势,划定为碳汇区。土壤类型中栗钙土、灰钙土、高山草原土和潮土覆盖区划定为碳汇区;黑钙土、山地草甸土、沼泽土、高山草甸土、风沙土和灰褐土覆盖区划定为碳源区;整个农牧区属于碳源区。分析还得出土壤较高的Corg/N比、较低的pH和较低的Si/Al比有利于土壤进行碳汇。
中文关键词:土壤有机碳储量  碳汇潜力  青海周边
 
Evaluation on potential soil carbon sequestrationin the surrounding area of Qinghai
Abstract:Our research object is the multi-target survey area. Based on the multi-target data and the second soil survey data, soil carbon storage is calculated, carbon source and sink are specified, and soil carbon sequestration potential is estimated. We have found that over the 20 years from the second soil survey, the surface soil of farming area in Haidong District, Qinghai Province is in the area of carbon source. And the surface soil of pastoral area in the north of surround Qinghai Lake in the area of carbon sink. Furthermore, the relatively high ratio of Corg/N, low pH and low ratio of Si/Al benefit to the incensement of soil organic carbon. These conclusions have an important guiding significance to the in-depth research on the soil carbon sequestration potential.
keywords:Soil organic carbon storage  Potential carbon sequestration  Surrounding area of Qinghai
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