| 叠叠沟流域华北落叶松人工林生长过程研究 |
| |
| 引用本文： | 梁君.叠叠沟流域华北落叶松人工林生长过程研究[J].宁夏农林科技,2014(9):20-22. |
| |
| 作者姓名： | 梁君 |
| |
| 作者单位： | 宁夏固原市原州区林业总场,宁夏 固原,756000 |
| |
| 摘 要： | 对叠叠沟小流域林区20年生华北落叶松人工林30株样木进行了树干解析,以研究其生长过程。结果表明:6~10年分别是华北落叶松胸径和树高的速生期,胸径高峰值出现在第11年(1.11 cm),树高高峰值出现在第7年(0.74 m),树高的平均生长量和连年生长量分别相交于14年;且胸径、树高的生长曲线相关关系密切;华北落叶松胸径年内生长表现出前快后慢的规律,5月份生长积累值最大,为0.608 cm;树高生长表现出慢—快—慢的规律,6月生长积累值最大,达到36 cm。
|
| 关 键 词： | 华北落叶松 人工林 树干解析 生长过程 |
A Study of Growth Process of Plantation in Diedie Gul y Watershed |
| |
| LIANG Jun.A Study of Growth Process of Plantation in Diedie Gul y Watershed[J].Ningxia Journal of Agriculture and Forestry Science and Technology,2014(9):20-22. |
| |
| Authors: | LIANG Jun |
| |
| Institution: | LIANG Jun (Yuanzhou District Forestry Farm of Guyuan Municipality, Guyuan, Ningxia 756000) |
| |
| Abstract: | A stem analysis was carried out with 30 sample trees from 20 years old Larix principis rupprecbtii plantation in Diedie gully watershed to study their growth process. The results showed that the fast-growing time of the tree height and DBH of Lan＇x principis ruppreehtii is the 6th- 10th years, the high peak value of DBH appears in the eleventh years（1.11 cm）, the high peak value of tree height appears in the seventh years （0.74 m）, the average growth quantity and the annual increment of the tree height intersected in the fourteenth years, and the growth curves of the tree height and DBH have a close relationship. The DBH growth of Larix principis rupprechtii showed the pattern that the rate was rapid at first and then slowed down, the maximum growth accumulation value was in May, reached 0.608 cm. The growth of tree height showed the pattern of ＂slow-fast-slow＂, and the maximum growth accumulation value was in June, reached 36 cm. |
| |
| Keywords: | Artificial forest Stem analysis Growth process |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
