地栽植适宜的景观树种,采用行状、团状或特意方式配置。在拟改造的树丛内,系统进行抚育伐,改善树丛状况。2.林分全部更替。价值很低并极端稀疏的刺槐林和山榆幼龄林,状态不佳或无观赏价值时,要全部更替,栽植适宜的树种。3.伞状采伐。在主要树种极度缺乏的地段,把注意力集中于 To planted the appropriate landscape tree species, the use of rows, clumps or deliberately configured. In the proposed grove, the system conducts tending and cutting to improve the condition of trees. 2. All the changes in the stand. Low value and extremely sparse Robinia pseudoacacia and Shanyu young forest, the state is poor or no ornamental value, we must replace all, planting the appropriate species. 3 umbrella cutting. In the area where the major tree species are extremely scarce, focus attention