The reproductive strategy of plants in shapotou played an essential role for vegetation stability . high resistance to drought and long life span enableed hedysarum scoparium and caragana korshinski to adapt themselves to the harsh environments 结果表明:在地处干旱半干旱的沙坡头地区,通过机械固沙与植物固沙相结合的防风治沙模式,建立的雨育人工固沙区植被经过多年演替形成的人工?天然植被是稳定的。