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Vesper

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Four typical land uses and a reference site were selected for this study, pine forest and barren hill in slope lands, cutrus orange and Camphor forest in terrace lands and a reference site in a flat land. Pine forest are dominated by pine which were planted in 1989. The forest have a density of 1250 tree/ hm2 , an average height of 12 m, and with an average DBH of 28cm. There are few vegetations under the forest as tea-oil camellia (Camellia oleifera)£¬èÙ×Ó¡£The coverage is about 0.4. Severe soil erosion combined with poor soil conditions, parts of pine roots exposed at the bare land where no vegetations grow
Three years ago, pine forest was removed by the local residents for fuel-wood consumption, barren hill was formed due to poor management. The main shrubs are Îå½Ú⣬¶Ì±ú–¢èÝ, and the main herb is Ýï²Ý.
Cutrus orange were panted in 1995. The density is 1350 tree/hm2 . There are a few ÑóÝïºÍÝï²Ý¡£
Camphor forests were planted 3-4 years in terrace land.  The seedings are used as economic forests. Shrub and herb were scare, but litters are rich.

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yunyanwuhen

ľ³æ (ÕýʽдÊÖ)

Four typical land uses and a reference site were selected for this study, pine forest and barren hill in slope lands, cutrus orange and Camphor forest in terrace lands and a reference site in a flat land. Pine forest was dominated by pine which were planted in 1989. The forest had a density of 1250 tree/ hm2 , an average height of 12 m, and an average DBH of 28cm. There were few vegetations under the forest as tea-oil camellia (Camellia oleifera)£¬Gardenia¡£The coverage was about 0.4. Because of severe soil erosion and poor soil conditions, parts of pine roots were exposed at the bare land where no vegetations grew.
Three years ago, pine forest was removed by the local residents for fuel-wood consumption, and barren hill was formed due to poor management. The main shrubs were Miscanthus floridulus£¬quercus serrata var. brevipetiolata , and the main herb was wormwood.
Cutrus orange were panted in 1995. The density was 1350 tree/hm2 . There were a few wormwood¡£
Camphor forests were planted in terrace land 3-4 years ago.  The seedings were used as economic forests. Shrub and herb were scare, but litters were rich.
2Â¥2010-11-02 19:18:25
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petrocatal

ľ³æ (ÕýʽдÊÖ)

Vesper(½ð±Ò+10, ·­ÒëEPI+1): 2010-11-02 20:19:33
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    With a flat as a reference, the study is involved in 4 land types, pine forest, the slope of barren hill, planted with cutrus orangeand camphor from terrace lands,repectively. Pine forest is covered with pine planted in 1989, which has a coverage of 1250 tree/ hm2 , an average tree height of 12 m and an average DBH of 28cm. It was found few of vegetations in the forest with the coverage only about 0.4 tree/ hm2, such as tea-oil camellia (Camellia oleifera)£¬èÙ×ÓGardenia. It was ascribed to soil leanness owing to severe erosion of the soil and thus exposure of pine roots. Since three years ago, the hill has been barren due to the cut-off by the local residents for fuel-wood consumption. The main reamined shrubs are (Îå½Úâ)aiscanthus floridulu£¬and (¶Ì±ú–¢èÝ)q.serrata var.brevipetiolata, and theÝï²Ýarmoise is a main herb. Cutrus orange trees were planted terrace lands with density of 1350 tree/hm2 in 1995. There are a few ÑóÝïConyza sumatrensisºÍÝï²Ýarmoise. Camphor trees as an economic plant were planted 3-4 years ago. Now, the terrace land is covered with plenty of litters and a few of shrub and herb.
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3Â¥2010-11-02 19:26:35
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Vesper

½ð³æ (СÓÐÃûÆø)

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4Â¥2010-11-02 20:19:20
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petrocatal

ľ³æ (ÕýʽдÊÖ)

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5Â¥2010-11-02 20:26:04
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Vesper

½ð³æ (СÓÐÃûÆø)

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Originally posted by petrocatal at 2010-11-02 20:26:04:
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6Â¥2010-11-02 21:19:24
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