为了探讨草原风蚀坑发育对土壤碳氮磷含量特征的影响，通过时空替代法分析土壤碳氮磷含量、储量及生态化学计量比的时空分异特征及环境响应。结果表明：（1）风蚀坑发育导致土壤含水率、田间持水量、总孔隙度分别下降57.8%、23.2%、15.4%，而土壤pH值和容重分别上升12.4%和13.7%，砂粒含量增加35.8%，粉粒和黏粒含量分别降低69.4%和79.6%；（2）风蚀坑发育造成土壤有机碳含量和储量分别降低34.9%和20.0%，0~20 cm土壤碳流失量最大，土壤氮含量与储量分别降低14.6%和3.1%，60~80 cm土壤氮流失量最显著，土壤磷含量和储量分别降低3.1%和3.4%，20~40 cm土壤磷流失量最多；（3）风蚀坑发育造成土壤C/N、C/P和N/P分别下降24.2%、34.5%和6.9%，表层0~20 cm土壤化学计量比降低最显著；（4）风蚀坑发育对土壤粒径组成的改变是引起土壤碳氮磷含量变化最主要因子，土壤水分供给能力的降低是次要因素。草原风蚀坑发育会造成土壤碳氮磷养分的大量流失，并导致土壤粗粒化、干旱化及次生盐渍化现象。

In order to explore the effects of the development of grassland blowouts on soil carbon， nitrogen and phosphorus characteristics， the spatial pattern of soil carbon， nitrogen and phosphorus content， reserves and ecological stoichiometric ratio in the process of grassland blowouts development was studied by space-time substitution method. The results showed that： （1） Grassland blowouts development caused an average decrease of soil moisture content， field capacity and porosity by 57.8%， 23.2% and 15.4%， respectively， resulting in an increase of soil pH and bulk density by 12.4% and 13.7%， respectively. It also caused the soil sand content to increase by 35.8 %， resulting in the decrease of silt and clay content by 69.4% and 79.6% respectively. （2） The soil organic carbon content and storage decreased by 34.9% and 20.0%， respectively， due to the development of grassland blowouts. The carbon loss in the 0-20 cm soil was significant， and the nitrogen content and storage decreased by 14.6% and 3.1%， respectively. The soil nitrogen loss in the 60-80 cm layer was the largest， and the phosphorus content and storage decreased by 3.1% and 3.4%， respectively， and the loss rate in the 20-40 cm layer was the largest. （3） Grassland blowouts development caused an average decrease of soil C/N， C/P and N/P decreased by 24.2%， 34.5 and 6.9%， respectively， and the loss rate of ecological stoichiometry in the 0-20 cm layer was the largest. （4） The change of soil particle size composition caused by the development of blowouts in grassland was the main factor causing the variation of soil carbon， nitrogen and phosphorus， and the decrease of soil water supply capacity was the secondary factor leading to the soil carbon， nitrogen and phosphorus storage capacity weakened. In summary， the development of grassland blowouts will cause a large loss of soil carbon， nitrogen and phosphorus nutrients， and lead to soil coarsening， drought and secondary salinization.