干旱区退耕还林高固碳效率树种筛选

以新疆常见的抗旱树种梭梭、柽柳、沙拐枣和经济树种枸杞、李树、杨树为研究材料．用英国PP system公司产CIRAS-1光合作用仪，以不同的光强测定以上6种树种的光合作用速率，以观测数据为基础，对6种树种的固碳能力分抗旱树种和经济树种两组进行了分析比较。结果表明，两组树种的固碳能力由高到低分别为柽柳〉梭梭〉沙拐枣和杨树〉枸杞〉李树。同时结合水分和土壤条件，对树种的筛选提出建议。

Screening of Tree Species with High-efficiency Carbon Sequestration for Returning Cultivated Land to Forest in Arid Area

The drought-resistant tree species are common in Xinjiang,such as Tamarix chinensis Lour. , Haloxylon ammodendron Bunge, Calligonum mongolicum Turcz. and economic tree species Prunus, P. bolleana,Lycium barbarurn L. are used as the research materials,CIRAS-1 Photosynthesis device made by PP system company are used to measure the photosynthetic rate of the above 6 tree species in a different light intensity. Based on the observational data, comparative analysis of carbon sequestration capacity is made for the 6 species in two groups of anti-drought species and economic species. The results show that carbon sequestration capacity of two tree species from high to low are Tarnarisc chinensis Lour. 〉 Haloxy- lon arnrnodendron Bunge〉 Calligonum mongolicurn Turcz. and P. bolleana 〉 L ycium barbarum L.〉 Prunus. At the same time, considering water and soil conditions,recommendations are provided for selection of tree species.