| 巴西半干旱地区自然条件和菌根菌接种条件下赤桉和大桉地上生物量营养成分分析(英文) |
| |
| 作者姓名： | Marcela C.Pagano Antonio F.Bellote Maria R.Scotti |
| |
| 作者单位： | Marcela C. Pagano,Maria R. Scotti(Microorganism-Plant Interaction Laboratory, Institute of Biological Sciences, Federal University of Minas Gerais, Av. Ant(o)nio Carlos, 6627, Pampulha, CEP: 31270-901, Belo Horizonte, MG, Brazil);Antonio F. Bellote(Embrapa Forestry, Estrada da Ribeira, km 111, Caixa Postal 319 - Colombo, PR - 83411-000- , Brazil)
|
| |
| 基金项目： | financed by CAPES (Coordenao de Aperfeioamento de Pessoal de Nível Superior) |
| |
| 摘 要： | 对巴西米纳斯吉拉斯州北部半干旱地区(15°09’S43°49’W)的赤桉(Eucalyptus camaldulensis)和大桉(Eucalyptus grandis)人工林的地上生物量、营养成分含量和菌根菌定植百分率进行了调查和分析。结果表明,赤按和大桉人工林的总地上生物量分别为33.6Mg·hm-2和153.1Mg·hm-2。赤桉树干、叶子、枝条和树皮的生物量分别占总生物量的64.4%,19.6%,15.4%,0.6%,大桉地上生物量的分配与赤按基本相同。赤桉叶子和枝条的干物质占其总生物量的35%,叶子和枝条中的N,P,K,Ca,Mg,and S的含量分别占总生物量这些营养元素的15.5%,0.7%,12.3%,22.6%,19%,1.4%。树干(包括树皮)中的营养成分累积相对比较低。与赤桉相比,大桉的营养含量变化较小。这2个树种的树干上部含有高浓度的磷,树皮也含有大量的营养物质,尤其是大桉;说明在半干旱地区,立地上脱落的植物性废物对降低树木生产力损失有重要意义。赤桉和大桉都有菌根营养。
|
| 关 键 词： | 桉树 生物量 营养成分 半干旱地区 共生 巴西 |
Aboveground nutrient components of Eucalyptus camaldulensis and E.grandis in semiarid Brazil under the nature and the mycorrhizal inoculation conditions |
| |
| Marcela C.Pagano,Antonio F.Bellote,Maria R.Scotti.Aboveground nutrient components of Eucalyptus camaldulensis and E.grandis in semiarid Brazil under the nature and the mycorrhizal inoculation conditions[J].Journal of Forestry Research,2009,20(1). |
| |
| Authors: | Marcela C Pagano Antonio F Bellote Maria R Scotti |
| |
| Abstract: | A study was conducted to evaluate the aboveground biomass, nutrient content and the percentages of mycorrhizal colonization in Eucalyptus camaldulensis and Eucalyptus grandis plantations in the semiarid region (15° 09' S 43° 49' W) in the north of the State of Minas Gerais in Brazil. Results show that the total above-ground biomass (dry matter) was 33.6 Mg·ha-1 for E. camaldulensis and 53.1 Mg·ha-1 for E. grandis. The biomass of the stem wood, leaves, branches, and stem bark for E. camaldulensis accounted for 64.4%, 19.6%, 15.4%, and 0.6% of the total biomass, respectively (Table 2); meanwhile a similar partition of the total above-ground biomass was also found for E. grandis. The dry matter of leaves and branches of E. camaldulensis accounted for 35% of total biomass, and the contents of N, P, K, Ca, Mg, and S in leaves and branches accounted for 15.5%, 0.7%, 12.3%, 22.6%, 1.9%, and 1.4% of those in total above-ground biomass, respectively. In the trunk (bark and wood), nutrient accumulation in general was lower. Nutrient content of E. grandis presented little variation compared with that of E. camaldulensis. Wood localized in superior parts of trunk presented a higher concentration of P and bark contained significant amounts of nutrients, especially in E. grandis. This indicated that leaving vegetal waste is of importance on the site in reducing the loss of tree productivity in this semi-arid region. The two species showed mycotrophy. |
| |
| Keywords: | Eucalyptus biomass nutrient components semi-arid region mycorrhizal symbioses Brazil |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
