10年生连香树人工群落平均个体生长规律研究

The Growth Law of the Mean Individual from Artificial Community of 10 Years Old Cercidiphyllum japonicum

对 10年生连香树人工群落平均木个体的地径、胸径、树高、材积和生物量的生长规律进行了研究 ,结果为 :10年生连香树人工群落平均木的带皮地径、带皮胸径、树高、带皮材积和生物量分别为 12 0 7cm、7 79cm、6 82m、0 0 1786 9m3 和 4 70 0 0g ;其平均生长量分别为 0 4 18cm /a～ 1.14 6cm/a、0 0 73cm/a～ 0 72 1cm/a、0 4 5 1m /a～ 0 70 8m/a、0 0 0 0 0 4 1m3 /a～ 0 0 0 15 76m3 /a和 2 5 g/a～ 4 70 0 0g/a ;其连年生长量分别为 0 5 5 0cm/a～ 1 195cm/a、0 32 5cm /a～ 1 2 5 0cm/a、0 330m/a～ 1 330m/a、0 0 0 0 119m3 /a～ 0 0 0 0 1835m3 /a和 15 7g/a～ 14 6 73g/a。材积和生物量生长高峰期在第 8～ 9年龄、树高生长高峰期在第 4～ 5年龄、地径的在第 6～ 7年龄、胸径的在第 5～ 6年龄。

The growth law of the basal diameter,diameter at breast height(DBH),height,volume and biomass of the mean individual from artificial community of 10 years old Cercidiphyllum japonicum were studied in this paper.Results indicated the basal diameter with bark,diameter at breast height(DBH)with bark,height,volume and biomass was respectively 12 07 cm,7 79 cm, 6 82 m ,0 017869 m 3 and 47 000 g;and its mean annual increment were 0 418 cm/a～1.146 cm/a,0 073 cm/a～0 721 cm/a,0 451 m/a～0 708 m/a,0 000041 m 3/a～0 001576 m 3/a and 2 5 g/a～4 700 0 g/a,and its current annual increment were 0 550 cm/a～1 195 cm/a,0 325 cm/a～1 250 cm/a,0 330 m/a～1 330 m/a,0 000119 m 3/a～0 0001835 m 3/a,157 g/a～14 673 g/a.The growth peaks of volume and biomass and height and basal diameter and DBH were respectively at 8～9,4～5,6～7 and 5～6 years age.