The modelled productivity of Miscanthus x giganteus (GREEF et DEU) in Ireland
The modelled productivity of Miscanthus x giganteus (GREEF et DEU) in Ireland
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DOI：
10.1016/s0926-6690(00)00042-x
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发表时间：
2000-08-01
影响因子：
5.9
通讯作者：
Jones, MB
中科院分区：
文献类型：
--
作者：
Clifton-Brown, JC;Neilson, B;Jones, MB
只有在区域基础上预测潜在生产力，才能估计芒草生物质对爱尔兰能源或纤维工业的贡献。为了对预测干物质产量的模型进行参数化，于 1994 年和 1995 年对 1990 年在爱尔兰中南部种植的芒草进行了田间试验，进行了生长和气候测量。这些用于得出以下之间的关系：（i）叶冠光截获和根据气温计算的热时间； (ii) 截获的辐射和地上生物量。这些关系用于参数化经验生产力模型，其中假定水和养分供应是非限制性的。该模型的输出被纳入地理信息系统 (GIS)，利用 23 个气候站 10 年的每日气温和入射辐射来绘制整个爱尔兰 M. x giganteus 的预测潜在产量。在整个岛屿上，生长季节结束时的潜在生物量产量在 16 至 26 t DM ha(-1) 之间。讨论了模型方法及其预测。 (C) 2000 Elsevier Science B.V. 保留所有权利。
The contribution of Miscanthus biomass to an energy or fibre industry in Ireland can only be estimated if the potential productivity is predicted on a regional basis. In order to parameterise a model to predict dry matter production, growth and climatic measurements were carried out in 1994 and 1995 on a Miscanthus field trial, planted in 1990 in southern central Ireland. These were used to derive relationships between: (i) leaf canopy light interception and thermal time calculated from air temperatures; and (ii) radiation intercepted and above ground biomass. These relationships were used to parameterise an empirical productivity model in which water and nutrient supplies are assumed non-limiting. The output from this model was incorporated into a geographical information system (GIS) to map the predicted potential production of M. x giganteus throughout Ireland, using 10 year daily air temperatures and incident radiation from 23 climatic stations. Across the island, potential biomass yields at the end of the growing season, ranged between 16 and 26 t DM ha(-1). The model approach and its predictions are discussed. (C) 2000 Elsevier Science B.V. All rights reserved.