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Table 2. Table of main tree and shrub species and all regeneration seedling species in the survey area |
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Main plant species in the survey area | |
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Cypress | |
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Melia azedarach |
Melia Azedarach |
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Choerospondias axillaris |
Choerospondias axillaris (Roxb.) Burtt et Hill. |
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Berry neem |
Cipadessa baccifera (Roth.) Miq. |
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Jade leaf golden flower |
Mussaenda pubescens W. T. Aiton |
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Alchornea trewioides |
Alchornea trewioides (Benth.) Muell. Arg. |
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Paper mulberry |
Broussonetia Papyrifera (Linn.) L'Her. ex Vent. |
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Cuiyun grass |
(Selaginella uncinata (Desv.) Spring |
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Sedge |
Carex brunnea Thunb. |
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Southern brocade moss |
Brotherella henonii (Duby) Fleisch |
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Setaria plicata |
Setaria plicata (Lam.) T. Cooke |
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Seedling species recorded in the sample plot | |
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Cypress | |
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Berry neem | |
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Jade leaf golden flower | |
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Broussonetia papyrifera and Camphor |
Cinnamomum camphora (L.) J. Presl |
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Pepper tree |
Zanthoxylum bungeanum Maxim. |
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Purple brocade |
Euphorbia cotinifolia Miq. |
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Rhamnus |
Rhamnus davurica Pall. |
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Rhus chinensis |
Rhus chinensis var. Roxburghii (DC.) Rehder |
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Wild pepper |
Lindera glauca var. Nitidula Lecomte |
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Maclura tricuspidata |
Maclura tricuspidata Carrire |
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White catalpa |
Mallotus paniculatus (Lam.) Mull. Arg. |
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Eucalyptus |
Eucalyptus robusta Sm. |
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Star anise maple |
Alangium chinense (Lour.) Harms |
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Yellow cow wood |
Cratoxylum cochinchinense (Lour.) Blume |
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Cassia tree |
Cinnamomum japonicum Siebold |
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Toona sinensis |
Toona sinensis (Juss.) Roem. |
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Sweet-scented osmanthus |
Osmanthus fragrans (Thunb.) Lour. |
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Eurya |
Eurya japonica Thunberg |
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Mulberry |
(Morus alba L.) |
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Table 3. Distribution of NR seedling density of cypress Tablica 3. Distribucija NR gustoće sadnica obične azijske tuje. |
Renewal density (individuals / hm2) Broj pomlatka po (pojedinačno / hm2) |
Number of sample plots Broj uzorkovanih ploha |
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0 |
20 |
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1-1000 |
5 |
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1001-2000 |
6 |
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2001-3000 |
2 |
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3001-4000 |
2 |
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4001-5000 |
2 |
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5001-6000 |
1 |
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6001-7000 |
1 |
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7001-8000 |
2 |
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48000-49000 |
1 |
Height structure of regeneration seedlings – Visinska struktura prirodnog pomlatka
In the investigated plots, cypress seedlings were only observed in 22 sample plots, of which sample plot No.8 was very special in that the number of renewed seedlings was much higher than that in other sample plots. To reduce the experimental error, sample plot No.8 with maximum value was removed when analyzing the height structure of seedlings at all levels. Although cypress seedlings appeared in plot 23, plot 26, and plot 28, grade I seedlings were lacking, that is, cypress seedlings in these three plots were planted manually. To reduce the experimental error, these three plots were also not involved in the analysis. Therefore, only remaining 18 sample plots were involved in the analysis of the height distribution of cypress seedlings.
As shown in Figure 3, the results showed that there were significant differences in the number of seedlings between grade I and grade III or IV young trees. The height structure of cypress regeneration seedlings showed a skewed distribution, and the numbers of cypress regeneration seedlings decreased with grades. The number of Grade I seedlings was the largest, suggesting that the seeds successfully germinated to form seedlings, and cypresses have no germination obstacles. The number of Grade I, Grade II, Grade III, and Grade IV showed a decreasing trend.
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Figure 3. Height class structure of cypress regeneration seedlings. *
represents P < 0.05, ns represents P > 0.05.
Slika 3. Visinska struktura pomlatka obične azijske tuje. * predstavlja P < 0,05, ns predstavlja P > 0,05. |