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The necessity,basis,characteristic and methods of restoring and reestabling broadleaved/coniferous mixed forest ecosystem from the secondary forest of Mongolian oak(Quercus mongolica)are briefly set forth;then several effective methods of restoration and reestablishment are put forward and discussed as follows:openning up effect belt or island to establish horizontal order mixture;replenishing the blank niche to make vertical orderly mix-ture;planting artificial mixed forest to create biological diversity;developing ecological forestry,establishing integrated agroforestry ecosystem;and closing the land for forest and pre-serving some stands considering special conditions and demads.
The necessity, basis, characteristic and methods of restoring and reestabling broadleaved / coniferous mixed forest ecosystem from the secondary forest of Mongolian oak (Quercus mongolica) are briefly set forth; then several effective methods of restoration and reestablishment are forward and discussed as follows: openning up effect belt or island to establish horizontal order mixture; replenishing the blank niche to make vertical orderly mix-ture; planting artificial mixed forest to create biological diversity; developing ecological forestry, establishing integrated agroforestry ecosystem; and closing the land for forest and pre -serving some stands considering special conditions and demads.