摘要
梳理了土地利用碳源/汇途径,估算了2010年陕南不同土地利用方式的碳源/汇。结果表明:79%的碳源来自于建设用地;农作物、林业、林地碳汇分别占41.44%、31.12%、24.16%,区域碳吸收大于碳释放,净碳汇1 467 751tC-eq;农作物碳汇区内差异很大,高值区在河谷地带,向两侧随高度增加递减,大巴山地高于秦岭山地;林业碳汇区内差异相对较小,河谷地带偏低,两侧山地区林业碳汇较高;两大盆地是净碳汇负值区,向周边山区碳汇逐渐增加,汉台区碳源密度值最高。
The carbon source and sink of various land uses in southern Shaannxi in 2010 were estimated.The results were as follows:The construction land was the primary cause of carbon source,while corps,forestry and forest land were the main three types of carbon source;The corp carbon sink which was higher in Daba Mountainous areas than Qinling Mountainous area,and declined from the valley to the sides;The forestry carbon sink varied little form the valley with lower density to the flanks with higher density;The two great basins were the net carbon source,which accumulated gradually in its surroundings;The highest carbon source area was in Hantai district.
出处
《西北林学院学报》
CSCD
北大核心
2013年第4期199-203,共5页
Journal of Northwest Forestry University
基金
陕西省高校哲学社会科学研究基地项目:SLGH1247
关键词
碳源
碳汇
土地利用
陕南
carbon source
carbon sink
land use
southern Shaanxi