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目的 为充分有效地利用水资源，稳定人工生态系统提供科学依据。方法 以油蒿和柠条为研究对象， 组建数学模型。结果 建立了油蒿、柠条在水分限制下的种间竞争模型：ｄ Ｎ１ｄｔ ＝ ｒ１ Ｎ１（ Ｋ１ － Ｎ１ － αλ２ Ｋ１ｒ１ ｖｖ１ Ｎ２ Ｋ１ ） ；ｄ Ｎ２ｄｔ ＝ ｒ２ Ｎ２（ Ｋ２ － Ｎ２ － βλ１ Ｋ２ｒ２ ｖｖ２ Ｎ１ Ｋ２ ） 。结论 油蒿与柠条之间实现着既竞争又稳定共存的格局。
Objectives To provide scientific basis for fully and effectively utilizing water resources and stabilizing the artificial ecosystem. Methods Artemisia ordosica and Caragana korshinskii were studied and mathematical models were established. Results The interspecific competition model of Artemisia ordosica and Caragana korshinskii under water limitation was established: d N1dt = r1 N1 (K1 - N1 - αλ2 K1r1 vv1 N2 K1 ); d N2dt = r2 N2 (K2 - N2 - βλ1 K2r2 vv2 N1 K2 ). Conclusion Both Artemisia ordosica and Caragana korshinskii have a competitive and stable coexistence pattern.