The effects of land development in Karamay artificial forest of carbon dioxide capture were analyzed based on the analytical results of soil and groundwater samples,coupling the theory of ecosystem services value.The results show that certain positive effects have been obtained through the land development.The mass fractions of organic matter,available nitrogen and fast-acting potassium in soil are all higher in the developed land than in the undeveloped.The condition of soil nutrient in the forest has been improved obviously.The mass fraction of total salt in soil is reduced by 67.5% in the developed land.The phenomenon of soil salinization has been controlled well.The forest ecosystem services value is 1.5417×10⁹ RMB¥·a^-1.However,there are also some negative effects along with the positive ones.The condition of salt in groundwater has deteriorated.The value of pH,conductivity,salinity and total salt are all higher in the developed land than in the undeveloped land,thus the chemical features of ground water is not sustainable for the CO₂ capture effects of the forest.The available phosphorus is becoming lower in mass fraction,which can not satisfy the development of forest plantations.