塔里木河中游柽柳灌丛碳储量及其价值评估

Value of Carbon Sequestration of Tamarix in the Midstream of the Tarim River

基于全株收获法和价值量评估方法,测定新疆塔里木河中游的盐生地、沙地、岩性土地等3种立地条件下柽柳灌丛碳储量及固碳价值,结果表明:(1)沙地柽柳灌丛的碳储量远大于盐生地和岩性土地,3者的碳储量之比为C沙地∶C盐生地∶C岩性土地=9.92∶4.62∶1。(2)沙地、盐生地柽柳灌丛的地上部分碳储量分别是其地下部分碳储量的1.21倍和3.53倍。(3)沙地柽柳灌丛不同器官的固碳量排序为:根>枝>干,盐生地和岩性土地各器官固碳量排序为:干>枝>根。(4)塔河流域中游柽柳林固碳价值为39 192.63元/hm2,其中柽柳灌丛固碳价值占80.79%,土壤占19.21%。

Based on the whole harvest method and value evaluation method,the carbon storage and value of carbon sequestration of Tamarix vegetation were measured in sandy land, saline land, and Gobi desert in the midstream of the Tarim River. The results showed that ： （ 1 ） The carbon storage of Tamarix vegetation in the sandy land was higher than that in the saline land and gobi desert.The ratio of carbon storage of Csandy land： Cnaline land： CGobi desert was 9.92：4.62：1. （2） The amounts of carbon storage of Tamarix vegetation aboveground in the sandy land and saline land were 1.21 and 3.53 times as much as that underground,respectively.（3 ） Organic carbon storage of Tamarix vegetation in the sandy land was root〉branch〉trunk, but were trunk〉branch〉root in the ：saline land and Gobi desert. （4） The value of carbon storage of Tamarix forest was 39 192.63 Yuan per hm2.The value of Tamarix vegetation was accounted for 80.79% ,soil accounted for 19.21%.