摘要
采用随机区组的3重复试验设计,研究了53个树种近10年的幼林生长特点。结果表明,(1)供试树种依据生长势和生长势变化率可划分为5个种组,Ⅰ和Ⅱ种组生长势呈单峰型,生长势和生长势变化率Ⅰ种组>Ⅱ种组;Ⅲ种组生长势呈下降型,生长势和生长势变化率Ⅲ种组<Ⅱ种组;Ⅳ种组生长势呈上升型,Ⅳ种组和Ⅱ种组生长势在2012年交汇;Ⅴ种组生长势呈下降型,2012年生长势值为0。(2)不同种组树种平均地径、高度和冠幅年生长量差异显著性不同,Ⅰ种组属快速恢复种组,Ⅳ种组属优选种组,Ⅱ-Ⅲ种组内的部分树种经进一步考察后仍可作为白云岩石漠区的造林树种。
With 3 repeats and in randomized blocks, experiments were carried out on growth characteristics of 53 species of nearly ten-year plantation. Results showed that ： （ 1 ） According to the growth vigor （GV） and rate of GV （RGV）, tested trees could be divided into 5 groups. GV of I group and II group presented the unimodal type with tendency of GV and RGV as I group〉 II group, GV of m group had a downward growth type in tenden- cy of GV and RGV with III group〈 II group, GV of IV group was on the rising trend and the meeting point of IV group and II group was in 2012, GV of Vgroup had a downward type with the GV index of 0 in 2012. （2） Annual growth of diameter, height, crown breadth in different groups were significantly different. I group belongs to fast recovery species, IV group to preferred species, some tree species of II group and III group could be used in forestation of dolomite karst area after further observation and study.
出处
《西部林业科学》
CAS
2017年第6期61-66,共6页
Journal of West China Forestry Science
基金
国家重点研发计划<喀斯特高原石漠化综合治理与生物能源产业技术与示范>(2016YFC0502605)
贵州省科技厅<白云质砂石山三种植被恢复途径配套技术研究与示范>(黔科合S字[2007]1024)
贵州省林业厅<白云质砂石山植被恢复技术研究与示范>(2006-5)项目共同资助
关键词
白云岩石漠区
人工幼林
树种筛选
dolomite karst area
young plantation
tree species selection
