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首页> 外文期刊>Bioenergy research >Species Trials of Short Rotation Woody Crops on Two Wastewater Application Sites in North Carolina, USA
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Species Trials of Short Rotation Woody Crops on Two Wastewater Application Sites in North Carolina, USA

机译：美国北卡罗来纳州两个污水处理场上的短轮伐木本作物的物种试验

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Forty-two Populus spp. clones, Eucalyptus benthamii, and seven tree species native to North Carolina were evaluated for survival and height growth through the establishment phase at two municipal wastewater application sites. Groundwater was monitored at each site to determine if establishment of the species trials resulted in exceedances of nutrient mitigation requirements. At the Gibson Wastewater Treatment Facility, 26 Populus clones had 100 % survival, with mean height growths ranging between 152 to 260 cm, and basal diameters ranging between 11.4 and 28.8 mm. Green ash, planted in 2011 and 2012, had high survivorship (>95 %) with first year mean height growth of 30 ± 28 cm (2012) and second year mean height growth of 101 ± 52 cm (2011). Basal diameter for green ash was 33.3 ± 12.6 mm. E. benthamii had moderate survivorship (>77 %) and first year mean height growth of 47 ± 27 cm. At the Jacksonville Wastewater Treatment Facility, green ash and bald cypress had high survivorship (>96 %), first year mean height growths of 14 ± 25 cm and 27 ± 16 cm, and basal diameters of 13.1 ± 3.9 mm and 11.6 ± 4.8 mm, respectively. Survivorship for 12 Populus clones ranged from 50 and 94 % with mean first year height growths between 58 to 121 cm, and basal diameters between 6.8 and 12.5 mm. E. benthamii had low survivorship (43 %) with mean first year height growths of 17 ± 17 cm and basal diameters of 12.0 ± 7.7 mm. Groundwater concentrations of NO3 + NO2 and N-NH4 remained below regulatory requirements at both sites with one exceedance in February 2012 in Jacksonville, NC. The results show that some Populus clones are excellent candidates for woody biomass production on municipal wastewater application fields. Native green ash and bald cypress are also good candidates, but these trees may require longer rotations than Populus to achieve similar biomass yields.
机译：四十二胡杨。在两个市政废水处理站点的建立阶段，评估了北卡罗莱纳州的两个无性系，桉树本生和七个树种的存活率和高度增长。在每个地点都对地下水进行了监测，以确定物种试验的建立是否导致了对营养缓解要求的超出。在吉布森废水处理设施中，有26个胡杨无性系存活率达100％，平均身高增长在152至260厘米之间，底径在11.4至28.8毫米之间。 2011年和2012年种植的绿灰存活率较高（> 95％），第一年平均身高增长30 height±28 cm（2012），第二年平均身高增长101±52 cm（2011）。绿灰的底径为33.3±12.6 mm。本氏肠杆菌的存活率中等（> 77％），第一年平均身高增长47±27 cm。在杰克逊维尔废水处理设施中，绿灰和柏树的存活率很高（> 96％），第一年的平均身高增长了14±25 cm和27±16 cm，基径分别为13.1±3.9 mm和11.6±4.8 mm ， 分别。 12个胡杨无性系的存活率介于50％和94％之间，第一年的平均身高增长在58至121cm之间，基部直径在6.8至12.5mm之间。本氏大肠杆菌的存活率较低（43％），第一年平均身高增长17±17 cm，基径为12.0±7.7mm。 2012年2月，在北卡罗来纳州杰克逊维尔，两个站点的NO3 ++ NO2和N-NH4地下水浓度均低于法规要求。结果表明，一些杨树无性系是城市污水应用领域木质生物量生产的优良候选者。天然的绿灰和秃头的柏树也是不错的选择，但是这些树可能需要比杨树更长的轮伐时间才能达到相似的生物量产量。

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