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人工林目前无法代替天然林的经济效益和生态功能。所以,天然更新的能力巨大,在面积和株数上的更新相比于同期人工更新的远远超出。对天然更新的作用不能够充分认识和利用,就是极大浪费了自然资源。因此,更新造林任务相当艰巨,资金非常紧张,如果开展天然更新与人工更新相结合的措施,即又节省资金、时间,又能使更新成活率有所保证,更新造林的任务的完成是很有可能的,另外又可对优良的“人天”混合林进行培育。
At present, plantations can not replace the economic benefits and ecological functions of natural forests. Therefore, the ability of natural regeneration is huge, and the update in terms of area and number of trees far exceeds the manual update of the same period. The role of natural regeneration can not fully understand and use, that is, a great waste of natural resources. Therefore, the task of reforestation is quite arduous and the fund is very tense. If we combine the natural rejuvenation with the manual rejuvenation, that is, save money and time, and ensure the renewal survival rate, the task of reforestation will be completed Possible, in addition to good “man days” mixed forest cultivation.