The System of Growth and Yield for Chamaecyparis formosensis Plantations in Ta-Hsueh-Shen Area of Taiwan
博士 === 國立中興大學 === 森林學系 === 85 === This paper is concentrating on timber management for even-aged thinned stands of Chamaecyparis formosensis plantations. To quantify stand structures and growth is necessary for timber management. The...
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ndltd-TW-085NCHU03600222015-10-13T12:15:17Z http://ndltd.ncl.edu.tw/handle/24840105892120541409 The System of Growth and Yield for Chamaecyparis formosensis Plantations in Ta-Hsueh-Shen Area of Taiwan 臺灣大雪山地區紅檜人工林生長收穫系統之研究 Yen, Tian-Ming 顏添明 博士 國立中興大學 森林學系 85 This paper is concentrating on timber management for even-aged thinned stands of Chamaecyparis formosensis plantations. To quantify stand structures and growth is necessary for timber management. The technique of stand density control can provide an important information for thinning operation. So make a study of sysetm of growth and yield have a special meaning in forest management. Data of this study were collected from permanent plots of three different even-aged thinned satnds of Chamaecyparis formosensis plantations on Ta-Hsueh-Shan,central Taiwan. The purpose of this study are:(1) to develop growth and yield models of individual tree and stand for thinned stands of Chamaecyparis formosensis plantations,(2) to study the influential factors of stand structure by direct and indirect methods, (3) to establish stand density management diagram. The summary of obtained result is as follows: We taking A stand as an example ,explores growth processes of individual tree,seven growth functions were applied in basal area growth of individual tree, namely Schumacher,Mitscherlich, Logistic,Gompertz, Richards,Modify-Weibull and Schnute growth model,respectively. The applicability of those models were discussed in this study. We find that 3 parameters Richards growth model is superior to others. Its advantages include flexibility in shape and biological meaning in growth process. In different thinning intensity stands,the effects of relative growth spacing variation on growth in terms of basal area ,height and volume of individual tree,the relationship between the time of maximum growth rate(tmax) and thinning intensity can express as follow :the heigher the stand density (the lower thinning intensity),the later tmax; in basal area and volume of individual tree,but tree height seems to do not correlate with thinning intensity. In stand level, relative survival functions, site index curves and diameter distribution models were discussed in study area. Diameter distributions of each permanent plots is fitted by three parameters Weibull probability density function. We analyese influential factors of stand structures by direct and indirect estimation methods,then examined errors of each step by Kolmogorov-Smirnov for the goodness of fit. After much discussion about the errors of each step,we integrated direct and indirect estimation methods, and find it is superior to direct and indirect estimation methods. Finally,the stand density management diagram of Chamaecyparis formosensis is developed in this study area. It can provide a quantitative approach for thinning operation. The findings will provide detailed information for even-aged thinned stands of Chamaecyparis formosensis plantations. Joou-Shian Lee 李久先 --- 1997 學位論文 ; thesis 178 zh-TW |
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博士 === 國立中興大學 === 森林學系 === 85 === This paper is concentrating on timber management for
even-aged thinned stands of Chamaecyparis formosensis
plantations. To quantify stand structures and growth is necessary
for timber management. The technique of stand density control can
provide an important information for thinning operation. So make
a study of sysetm of growth and yield have a special meaning in
forest management.
Data of this study were collected from permanent plots of
three different even-aged thinned satnds of Chamaecyparis
formosensis plantations on Ta-Hsueh-Shan,central Taiwan.
The purpose of this study are:(1) to develop growth and yield
models of individual tree and stand for thinned stands of
Chamaecyparis formosensis plantations,(2) to study the
influential factors of stand structure by direct and indirect
methods, (3) to establish stand density management diagram.
The summary of obtained result is as follows:
We taking A stand as an example ,explores growth processes of
individual tree,seven growth functions were applied in basal area
growth of individual tree, namely Schumacher,Mitscherlich,
Logistic,Gompertz, Richards,Modify-Weibull and Schnute growth
model,respectively. The applicability of those models were
discussed in this study. We find that 3 parameters Richards
growth model is superior to others. Its advantages include
flexibility in shape and biological meaning in growth process.
In different thinning intensity stands,the effects of
relative growth spacing variation on growth in terms of basal
area ,height and volume of individual tree,the relationship
between the time of maximum growth rate(tmax) and thinning
intensity can express as follow :the heigher the stand density
(the lower thinning intensity),the later tmax; in basal area and
volume of individual tree,but tree height seems to do not
correlate with thinning intensity.
In stand level, relative survival functions, site index
curves and diameter distribution models were discussed in study
area. Diameter distributions of each permanent plots is fitted by
three parameters Weibull probability density function. We
analyese influential factors of stand structures by direct and
indirect estimation methods,then examined errors of each step by
Kolmogorov-Smirnov for the goodness of fit. After much discussion
about the errors of each step,we integrated direct and indirect
estimation methods, and find it is superior to direct and
indirect estimation methods.
Finally,the stand density management diagram of Chamaecyparis
formosensis is developed in this study area. It can provide a
quantitative approach for thinning operation.
The findings will provide detailed information for even-aged
thinned stands of Chamaecyparis formosensis plantations.
|
author2 |
Joou-Shian Lee |
author_facet |
Joou-Shian Lee Yen, Tian-Ming 顏添明 |
author |
Yen, Tian-Ming 顏添明 |
spellingShingle |
Yen, Tian-Ming 顏添明 The System of Growth and Yield for Chamaecyparis formosensis Plantations in Ta-Hsueh-Shen Area of Taiwan |
author_sort |
Yen, Tian-Ming |
title |
The System of Growth and Yield for Chamaecyparis formosensis Plantations in Ta-Hsueh-Shen Area of Taiwan |
title_short |
The System of Growth and Yield for Chamaecyparis formosensis Plantations in Ta-Hsueh-Shen Area of Taiwan |
title_full |
The System of Growth and Yield for Chamaecyparis formosensis Plantations in Ta-Hsueh-Shen Area of Taiwan |
title_fullStr |
The System of Growth and Yield for Chamaecyparis formosensis Plantations in Ta-Hsueh-Shen Area of Taiwan |
title_full_unstemmed |
The System of Growth and Yield for Chamaecyparis formosensis Plantations in Ta-Hsueh-Shen Area of Taiwan |
title_sort |
system of growth and yield for chamaecyparis formosensis plantations in ta-hsueh-shen area of taiwan |
publishDate |
1997 |
url |
http://ndltd.ncl.edu.tw/handle/24840105892120541409 |
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