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作 者 ：康文星 田大伦 刘煊章

期 刊 ：林业科学 1997年 33卷 zk2期 页码：55-60

关键词：第二代杉木人工林；径流；

Keywords:The Second generation of Chinese fir, Runoff, Ecological restoration,

摘 要 ：以连续5年的测定数据，对第二代杉木人工林径流的生物调节功能恢复进行了研究。结果表明：1年生杉木幼林对径流和最大洪峰流量生物调控能力已具有成林9％和6％，4年生杉木幼林其生物调节功能已恢复到成林的34％和19％。径流的调节不单是植被的恢复起作用，其它因子，如林分高度与分布，土壤的根系分布和林内死地被物保持水分能力的变化等，也影响着径流的大小。亚热带地区杉木人工林皆伐后，紧接营造第二代杉木人工林，幼林对径流量的调节恢复到成熟林的程度大约需要10年以上的时间。

Abstract:A five—year’s study was carried out at Huitong county，southwest Hunan Provice．The results showed that once the young stand established，its ecological restoration start-ed．The restoration of runoff and that of maximum flood discharge in the one—year—old young stand was 9％ and 6％ of that in the mature stand respectively，while those in the four—year—old young stand reached to 44％ and 19％，respectively．The occurrence of artificial disturbance and precipitation could change the ecological restoration speed in young stands．Other factors，such as the height distribution，the root distribution,and the water storage capacity of litter in the stand,as well as vegetation restoration，could regulate the runoff．In subtropical zone，the full ecological restoration in the second gen-eration of Chinese fir，afforested after clear cutting of the first generation，will take more than 10 years．

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