| 摘要: |
| 2014年8月，对高州市红椎等7种阔叶树种早期生长状况进行了调查，结果表明，3个林龄（4年、3年和2年生）红椎树高生长较快，其次为台湾相思，而香樟早期树高生长较慢；3个林龄红椎、枫香及红花荷地径生长较快，同样香樟地径生长较慢。方差分析表明，同一树种树高在4年和3年生间差异不显著（P＞0.05），表明3年~4年生红椎等7种阔叶树种树高生长不明显，却显著高于2年生（P＜0.05）；除枫香、红花荷、台湾相思外，其余各树种3个林龄间地径均存在显著差异（P＜0.05）。3个林龄树高下坡/上坡均值分别为1.43（4年生）、1.48（3年生）和1.24（2年生），而地径下坡/上坡均值分别为1.21（4年生）、1.32（3年生）和1.32（2年生），阔叶树种在下坡生长状况明显高于上坡。本研究为阔叶树种树种选择及可持续经营提供科学参考。 |
| 关键词: 阔叶树种 早期生长 不同坡位 高州 |
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| Analysis of early growth of seven kinds of broad-leaved trees including |
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Zeng Wu
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| Abstract: |
| The early growth conditions of seven kinds of broad-leaved trees including Castanopsis hystrix of Gaozhou were investigated in Gaozhou city in August 2014. The present results showed that Castanopsis hystrix had rapid height growth, followed by Acacia confuse Merr, and early height growth of Cinnamomum camphora was slower with three forest age (4 years, 3 years and 2 years old). Diameter growth of Castanopsis hystrix, Liquidambr formosana Hance, Rhodoleia championii were faster, while early diameter growth of Cinnamomum camphora was slower. Analysis of variance showed the tree height of the same species in 4 years and 3 years old were no significant differences (P>0.05), and showed trees high growth of seven kinds of broad-leaved trees including Castanopsis hystrix was not obvious from three-year to four-year-old, but trees high growth of seven kinds of broad-leaved trees with three-year-old and four-year-old was significantly higher than that of the 2-year-old (P<0.05). Except for Liquidambr formosana Hance, Rhodoleia championii, Acacia confuse Merr, diameter growth of the rest species were significantly different (P<0.05). The mean ratio of downhill and uphill with tree height in three forest age were 1.43 (4 years old), 1.48 (3 years old) and 1.24 (2 years old), and diameter downhill / uphill mean were 1.21 (4 years old), 1.32 (3 years old) and 1.32 (2 years old), growth condition of broadleaf species in downhill was significantly higher than those of the uphill. The study provided scientific reference for the species selection and sustainable management. |
| Key words: broad-leaved trees early growth different slope positions Gaozhou |
