Chin J Plant Ecol ›› 2008, Vol. 32 ›› Issue (6): 1258-1267.DOI: 10.3773/j.issn.1005-264x.2008.06.006
• Original article • Previous Articles Next Articles
TANG Luo-Zhong1,*(), HUANG Bao-Long1, HAIBARA Kikuo2, TODA Hiroto2
Received:
2008-04-11
Accepted:
2008-07-29
Online:
2008-04-11
Published:
2008-11-30
Contact:
TANG Luo-Zhong
TANG Luo-Zhong, HUANG Bao-Long, HAIBARA Kikuo, TODA Hiroto. ECOLOGICAL ADAPTATION MECHANISMS OF ROOTS TO FLOODED SOIL AND RESPIRATION CHARACTERISTICS OF KNEE ROOTS OF TAXODIUM ASCENDENS[J]. Chin J Plant Ecol, 2008, 32(6): 1258-1267.
Fig. 1 Aerating roots of Taxodium ascendensin the high water table site (1-1, 1-2), and knee roots of T. ascendensin the middle water table site (1-3, 1-4)
地下生物量(kg·stem-1) Belowground biomass | 地上生物量(kg·stem-1) Aboveground biomass | 地下/地上 Belowg round/Above ground | |||
---|---|---|---|---|---|
高水位 High water table | 13.62±1.43a | 20.56±3.47a | 0.656±0.051a | ||
中水位 Middle water table | 18.80±1.78b | 44.83±4.96b | 0.439±0.043b | ||
低水位 Low water table | 26.69±2.84c | 71.93±9.32c | 0.348±0.038b |
Table 1 Belowground biomass and aboveground biomass of Taxodium ascendens in different water table sites (means±SD)
地下生物量(kg·stem-1) Belowground biomass | 地上生物量(kg·stem-1) Aboveground biomass | 地下/地上 Belowg round/Above ground | |||
---|---|---|---|---|---|
高水位 High water table | 13.62±1.43a | 20.56±3.47a | 0.656±0.051a | ||
中水位 Middle water table | 18.80±1.78b | 44.83±4.96b | 0.439±0.043b | ||
低水位 Low water table | 26.69±2.84c | 71.93±9.32c | 0.348±0.038b |
高水位 High water table | 中水位 Middle water table | 低水位 Low water table | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
2.66±0.11a | 2.08±0.10b | 1.75±0.08c |
Table 2 Ratios of diameter at ground and at breast height of Taxodium ascendens in different water table sites (means±SD)
高水位 High water table | 中水位 Middle water table | 低水位 Low water table | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
2.66±0.11a | 2.08±0.10b | 1.75±0.08c |
地下根Underground roots (g·cm-3) | 气生根(g·cm-3) Aerating roots | 膝根(g·cm-3) Knee roots | ||
---|---|---|---|---|
高水位 High water table | 中水位 Middle water table | 低水位 Low water table | ||
0.390±0.037a | 0.437±0.042a | 0.473±0.051ab | 0.543±0.046b | 0.586±0.048b |
Table 3 Volume weight of underground roots, aerating roots and knee roots of Taxodium ascendens in different water table sites (means±SD)
地下根Underground roots (g·cm-3) | 气生根(g·cm-3) Aerating roots | 膝根(g·cm-3) Knee roots | ||
---|---|---|---|---|
高水位 High water table | 中水位 Middle water table | 低水位 Low water table | ||
0.390±0.037a | 0.437±0.042a | 0.473±0.051ab | 0.543±0.046b | 0.586±0.048b |
水位 Water table | N | P | K | Ca | Mg | Fe | Mn | |
---|---|---|---|---|---|---|---|---|
(g·kg-1) | ||||||||
叶 Leaves | 高 High | 19.3±2.1a | 1.00±0.13a | 8.2±1.1a | 33.7±4.2a | 4.4±0.4a | 0.96±0.12a | 0.08±0.02a |
中 Middle | 17.9±1.2a | 0.80±0.09a | 9.5±1.3a | 32.9±2.1a | 4.0±0.3a | 1.07±0.16a | 0.05±0.01a | |
低 Low | 17.3±1.8a | 0.85±0.07a | 7.4±0.9a | 30.6±3.4a | 3.8±0.4a | 0.84±0.13a | 0.05±0.01a | |
细根 Fine roots | 高 High | 9.5±1.6a | 0.65±0.05a | 2.4±0.2a | 5.5±0.9a | 1.6±0.2a | 19.1±3.1a | 0.21±0.04a |
中 Middle | 9.7±1.5a | 0.77±0.07a | 2.3±0.2a | 9.2±1.4b | 2.4±0.3b | 23.9±2.8a | 0.25±0.03a | |
低 Low | 12.9±1.8a | 0.73±0.05a | 2.3±0.3a | 10.8±1.8b | 2.2±0.3b | 1.7±0.3b | 0.11±0.02b |
Table 4 Elemental concentrations in leaves and fine roots (<2 mm) ofTaxodium ascendens in different water table sites (means±SD)
水位 Water table | N | P | K | Ca | Mg | Fe | Mn | |
---|---|---|---|---|---|---|---|---|
(g·kg-1) | ||||||||
叶 Leaves | 高 High | 19.3±2.1a | 1.00±0.13a | 8.2±1.1a | 33.7±4.2a | 4.4±0.4a | 0.96±0.12a | 0.08±0.02a |
中 Middle | 17.9±1.2a | 0.80±0.09a | 9.5±1.3a | 32.9±2.1a | 4.0±0.3a | 1.07±0.16a | 0.05±0.01a | |
低 Low | 17.3±1.8a | 0.85±0.07a | 7.4±0.9a | 30.6±3.4a | 3.8±0.4a | 0.84±0.13a | 0.05±0.01a | |
细根 Fine roots | 高 High | 9.5±1.6a | 0.65±0.05a | 2.4±0.2a | 5.5±0.9a | 1.6±0.2a | 19.1±3.1a | 0.21±0.04a |
中 Middle | 9.7±1.5a | 0.77±0.07a | 2.3±0.2a | 9.2±1.4b | 2.4±0.3b | 23.9±2.8a | 0.25±0.03a | |
低 Low | 12.9±1.8a | 0.73±0.05a | 2.3±0.3a | 10.8±1.8b | 2.2±0.3b | 1.7±0.3b | 0.11±0.02b |
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