Rhizome and Root System Structure of Phyllostachys edu lisStand under ExtensiveManagement

ZHOU Ben-zhi; FU Mao-yi

The rhizome and root system structure of Phyllostachys edulis stand under extensive managementwas studiedin this paper, and with the root analysis system, WinRH IZO, the morphological characteristics of basal root andrhizome root of Phyllostachys edulis were analyzed. The results showed that the total dry weight, volume, length andsurface area of rhizome of Phyllostachys edulis stand under extensive management were 6 179. 44 kg·hm-2 , 24. 57m3·hm-2 , 84 872. 99 m·hm-2 and 5 066. 10 m2·hm-2 respectively. Most of the rhizomes were located in 0～30cm soil layer. The 3～4 years old rhizomes took the biggest share in terms of the age structure, accounting for about40%, and 1～2 years old rhizomes took a minor share, accounting for about 10%, and most of them were located inthe soil layer of 0～30 cm, accounting of 92. 65% of the total dryweight at this age class. The dryweights of the basal root and rhizome root of Phyllostachys edulis stand under extensive management were 3 564. 92 kg·hm-2 and5 506. 28 kg·hm-2 respectively and their lengths were 2. 24 ×107m·hm-2 and 6. 40 ×107m·hm-2 respectively.The amount of rhizome root wasmore than that of basal root with the dry weight, length, volume and surface area ofrhizome root being 1. 55, 2. 86, 1. 80 and 2. 52 times asmuch as those of basal root. Within the underground systemof bamboo stand, the dry weight of rhizome accounted for 40. 52% with its volume accounting for 67. 56%. The totallength and volume of rootwere about 1 000 and more than 20 times asmuch as those of rhizome respectively.

1. Research Institute of Subtrop ical Forestry, CAF, Fuyang 311400, Zhejiang, China

Received Date: 2007-04-19

Abstract: The rhizome and root system structure of Phyllostachys edulis stand under extensive managementwas studiedin this paper, and with the root analysis system, WinRH IZO, the morphological characteristics of basal root andrhizome root of Phyllostachys edulis were analyzed. The results showed that the total dry weight, volume, length andsurface area of rhizome of Phyllostachys edulis stand under extensive management were 6 179. 44 kg·hm-2 , 24. 57m3·hm-2 , 84 872. 99 m·hm-2 and 5 066. 10 m2·hm-2 respectively. Most of the rhizomes were located in 0～30cm soil layer. The 3～4 years old rhizomes took the biggest share in terms of the age structure, accounting for about40%, and 1～2 years old rhizomes took a minor share, accounting for about 10%, and most of them were located inthe soil layer of 0～30 cm, accounting of 92. 65% of the total dryweight at this age class. The dryweights of the basal root and rhizome root of Phyllostachys edulis stand under extensive management were 3 564. 92 kg·hm-2 and5 506. 28 kg·hm-2 respectively and their lengths were 2. 24 ×107m·hm-2 and 6. 40 ×107m·hm-2 respectively.The amount of rhizome root wasmore than that of basal root with the dry weight, length, volume and surface area ofrhizome root being 1. 55, 2. 86, 1. 80 and 2. 52 times asmuch as those of basal root. Within the underground systemof bamboo stand, the dry weight of rhizome accounted for 40. 52% with its volume accounting for 67. 56%. The totallength and volume of rootwere about 1 000 and more than 20 times asmuch as those of rhizome respectively.

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Rhizome and Root System Structure of Phyllostachys edu lisStand under ExtensiveManagement

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