Techniques and Investigation Analysis of Sprouting Regeneration of Cunninghamia lanceolata
Through the observation and analysis of 1~15-year growth of the sprouting regeneration stands of Cunninghamia lanceolata,the results showed that the average height and basal diameter of the 1~4-year-old young trees reached 4.1 m and 9.5 cm respectively,241.2 % and 351.9% those of the seedling forests of the same age.The average DBH,height and timber stock volume of 10-year-old sprouting regeneration forests reached 11.4 cm,7.8 m and 97.9 m3/hm2 respectively,142.5%,116.4% and 159.2% those of the seedling forests.The average DBH,height and timber stock volume of 15-year-old sprouting regeneration forests reached 15.6 cm,10.3 m and 192.8 m3/hm2 respectively,126.8%,103.0% and 118.4% those of the seedling forests.The preliminary input cost for the sprouting regeneration is only 60.8 % that of seedling afforestation.The sprouting regeneration is thus a fast-growing and short-rotating regeneration with low input cost and simple techniques.
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万方数据
维普
