不同栽植代数29年实生杉木生长规律的研究

Abstract

Abstract:

Through analysis on growth process of 29-year-old Chinese fir stand from seed in different rotation of continuous planting in Ancaoxia, Nanping, Fujian, the results showed that, before ten-year-old, the increment of tree height, D B H and volume for the first and the second rotations were close, after that, the growth of the second rotation declined rapidly, the mean individual volume of 29-year-old decreased by 41.46 percent compared with that of first rotation. The growth of tree height, D B H and volume of the third rotation were lesser than those of the second rotation at the beginning, but decline did not occur to a large range at last, the mean individual volume of 29-year-old trees reduced by 17.70 percent compared with that of the second rotation. The fewer of the planting, the earlier of the time reaching peak growth, the bigger of the peak value, and the longer of sustainable time over the fast-growing period.

Key words: Chinese fir, Rotations of continuous planting, Growth increment, Growth pattern

Cite this article

Yusheng Yang,Baolong Huang,Zongming He,Renhui Qiu,Xintuo Yu. GROWTH PATTERN OF 29-YEAR-OLD CHINESE FIR GROWN FROM SEED IN DIFFERENT ROTATIONS[J]. Scientia Silvae Sinicae, 1999, 35(1): 32-36.

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Figures/Tables 9

Fig.1

Total increment of tree height for Chinese fir trees grown from seeds in different lotations First rotaion, Second rotation, Third rotation (The same as follows)."

Fig.1

Fig.2

Current annual increment of tree height for Chinese fir from seed in different rotations"

Fig.2

Fig.3

Mean annual increment of tree height of Chinese fir trees grown from seeds in different rotations"

Fig.3

Fig.4

Total increment of DBH of Chinese fir trees grown from seeds in different rotations"

Fig.4

Fig.5

Current annual increment of DBH for Chinese fir trees grown from seed in different rotations"

Fig.5

Fig.6

Mean annual increment of DBH for Chinese fir in different rotations"

Fig.6

Fig.7

Total volume increment for Chinese fir trees grown from seed in different rotations"

Fig.7

Fig.8

Current annual increment of volume for Chinese fir trees grown from seed in different rotations"

Fig.8

Fig.9

Mean annual volume increment of seed grown Chinese fir in different rotations"

Fig.9

References 5

1	方奇. 杉木连栽对土壤肥力及其林木生长的影响. 林业科学, 1987. 23 (4): 389- 397.
2	俞新妥. 杉木连栽林地土壤生化特性及土壤肥力的研究. 福建林学院学报, 1989. 9 (3): 256- 262.
3	陈楚莹, 等. 改善杉木人工林的林地质量和提高生产力的研究. 应用生态学报, 1990. 1 (2): 97- 106.
4	盛炜彤. 我国人工林地力衰退及防治对策.人工林地力衰退研究. 北京: 中国科学出版社. 1992.
5	吴中伦主编.杉木.北京:中国林业出版社, 1984

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