摘要
The principal felling age of poplar on Changjiang River beach was studied in Nangen forest farm of Huaining County of Anhui Province. Based on beach altitude, the beach was divided into two site conditions: the higher beach(15～16\^5?m) and lower beach(14～15?m). Model \%y=a+b\% ln\%A\% was selected as the growth model of poplar plantation. The yield table of poplar plantation was compiled by growth model. At the same time, the assortment yield table of poplar plantation was compiled based on the univariate volume ratio model. According to volume yield table and assortment yield table, the quantitative maturity age both two sites should be 7 years, technical maturity age of match blocks for higher beach and lower beach were 5 years and 6 years respectively. Economic maturity age was 10～13 years for higher beach(\%P\%=10%\,8%\,6%) and 11～12 years for lower beach (\%P\%=10%\,8%) on the basis of the maximum net present value. In conclusion, according to the three maturity age and management purposes the principal felling age of poplar plantation should be 10～14 years for higher beach and 8～12 years for lower beach.
The principal felling age of poplar on Changjiang River beach was studied in Nangen forest farm of Huaining County of Anhui Province. Based on beach altitude, the beach was divided into two site conditions: the higher beach(15～16\^5?m) and lower beach(14～15?m). Model \%y=a+b\% ln\%A\% was selected as the growth model of poplar plantation. The yield table of poplar plantation was compiled by growth model. At the same time, the assortment yield table of poplar plantation was compiled based on the univariate volume ratio model. According to volume yield table and assortment yield table, the quantitative maturity age both two sites should be 7 years, technical maturity age of match blocks for higher beach and lower beach were 5 years and 6 years respectively. Economic maturity age was 10～13 years for higher beach(\%P\%=10%\,8%\,6%) and 11～12 years for lower beach (\%P\%=10%\,8%) on the basis of the maximum net present value. In conclusion, according to the three maturity age and management purposes the principal felling age of poplar plantation should be 10～14 years for higher beach and 8～12 years for lower beach.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2002年第6期154-158,共5页
Scientia Silvae Sinicae
基金
"九五"攻关项目<长江中下游不同类型滩地综合治理与开发配套技术研究及示范>的部分内容专题号:96 0 0 7 0 2 0 6
关键词
杨树人工林
主伐年龄
长江滩地
数量成熟
工艺成熟
经济成熟龄
Changjiang River beach, Poplar, Quantitative maturity, Tachnical maturity, Economic maturity age, Principal felling age
