[1]周林,马以秀,张宏忠,等.水杉人工林抚育间伐效果比较及其经济效益分析[J].南京林业大学学报(自然科学版),1997,21(02):093-96.[doi:10.3969/j.jssn.1000-2006.1997.02.021]
 Zhou Lin Ma Yixiou Zhang Hongzhong Jiang Jiangang(Forestry and Pasture Bureau of Jianhu County of Jiangsu Province Jianhu 700)Zhu Guosheng.IMPACTS OF THINNING ON THE VOLUME INCREMENT AND REVENUES REVENUES OF METASEQUOIA GLYPTOSTROBOIDES PLANTATIONS[J].Journal of Nanjing Forestry University(Natural Science Edition),1997,21(02):093-96.[doi:10.3969/j.jssn.1000-2006.1997.02.021]
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水杉人工林抚育间伐效果比较及其经济效益分析
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《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

卷:
21
期数:
1997年02期
页码:
093-96
栏目:
研究论文
出版日期:
1900-01-01

文章信息/Info

Title:
IMPACTS OF THINNING ON THE VOLUME INCREMENT AND REVENUES REVENUES OF METASEQUOIA GLYPTOSTROBOIDES PLANTATIONS
文章编号:
1000-2006(1997)02-0093-04
作者:
周林;马以秀;张宏忠;蒋建刚;朱国生
江苏省建湖县林牧业局;江苏省建湖县林场
Author(s):
Zhou Lin Ma Yixiou Zhang Hongzhong Jiang Jiangang(Forestry and Pasture Bureau of Jianhu County of Jiangsu Province Jianhu 224700)Zhu Guosheng
Forest Farm of Jianhu County of Jiangsu Province
关键词:
水杉抚育间伐效果
Keywords:
Metasequoia glyptostroboides Thinning Impact
DOI:
10.3969/j.jssn.1000-2006.1997.02.021
文献标志码:
A
摘要:
<正>在水杉人工林内设立标准地,定量机械间伐,定期测定生长量,对其抚育间伐效果及经济效益进行分析,结果表明:(1)不同初植密度的林分采用较小的强度Pn=25%、33%进行间伐,与对照林分相比,平均每公顷生长量分别提高5.97m3、9.27m3,增加9.57%、14.87%;采用较大强度Pn=50%进行间伐,与对照林分相比,平均每公顷生长量下降9.7m3,减少15.57%。(2)抚育间伐过的林分(间伐强度Pn=25%、33%、50%)与对照林分相比,单位面积保留木平均生长率分别提高1.34%、2.00%、1.97%。(3)抚育间伐的林分与对照林分相比,平均每公顷总产值和利润分别增加6278元、5784元,增长7.7%、9.5%。
Abstract:
In this Paper, authors have established experimental plots of quantitative mechanical thinning and also measured periodically the volume increment of thinned stands in order to investigate impacts of thinning on the growth and revenues of Metasequoia glyptostroboides plantations. The main results could be briefly described as follows:(1)The average volume increment of stands with low thinning intensities of 25% and 33% increased by 5.97 m3 and 9.27 m3 per hactare (or accounted for 9.57% and 14.87% of the total volume) respectively compared with control stand. However, that with a heavy thinning intensity of 50% decreased by 9.7 m3 per hactare (or accounted for 15.57% of the total volume).(2)The mean growth rates of maintained trees with three thinning intensities described above increased by 1.34%, 2.00% and 1.97% respectively in comparison with nonthinning control stand.(3)The total production value and net revenue of the thinned stands increased by 6 278 yuan and 5 784 yuan per hactare (or accounted for 7.7% and 9.5% of the total revenue ) respectively.

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更新日期/Last Update: 1900-01-01