植树造林已公认为是增加碳汇的重要措施，而固沙造林作为治理沙化土地最有效的措施，也必然对沙地生态系统的碳储量产生影响，但是其固碳作用长期被忽视。以石羊河流域人工固沙林为研究对象，选择流动沙丘、天然灌丛与地带植被为对照，通过对不同沙化土地、不同树种、不同年代和不同管理措施人工固沙林碳储量的实地调查，量化与评价不同管理模式和不同树种人工固沙林的固碳能力，揭示典型人工固沙林碳储量的演变过程、规律与驱动机制；运用卫片解译与国家二类清查数据，获取不同区域和立地条件的碳储量空间数据，掌握石羊河流域人工固沙林生态系统碳储量时空格局；利用碳汇测量、监测和预测工具The Carbon Benefits Project (CBP)，评价石羊河流域人工固林的固碳效益和速率，预测石羊河流域固沙造林的固碳潜力，提出提高人工固沙林碳汇功能的可能途径和调控技术，为干旱地区固沙造林以及人工固沙林管理提供理论依据。

Afforestation has been regarded as an important measure to increase carbon sequestration. Sand-binding afforestation is the most effective and economical measures to control the desertified land, and must also impact on carbon stock of sandy ecosystem. However, the function of its carbon sequestraton was ignored in the past. In the Shiyang river basin in arid areas, comparing to the shifting sand dune, natural sandy shrub vegetation and native vegetation, carbon stocks of the artificial sand-binding forests with the different age, trees and management measures at the different sandy lands will be investigated to quantify and evaluate their carbon sequestration capacity, and to reveal the carbon sequestration process, rule and its driving mechanism of the artificial sand-binding forest. Spatial data at the different scale, tree and site condition will be obtained based on the satellite image and national forest inventory data to spatial pattern of carbon stocks of the artificial sand-binding forest in the Shiyang river basin. Using the carbon inventory tool of The Carbon Benefits Project (CBP) , the benefit and rate of carbon sequestration of the artificial sand-binding forest will be evaluated, and carbon sequestration potential of sand-binding afforestation under the different scenario will be forecasted. Base on above research results, possible pathways and regulation techniques to improve the carbon stock function of the artificial sand-binding forest will be put forward, which has important guidance significance for the tree selection and management of sand-binding afforestation in arid areas.