Influence of Canopy Management Practices on Vineyard Microclimate: Definition of New Microclimatic Indices
Influence of Canopy Management Practices on Vineyard Microclimate: Definition of New Microclimatic Indices
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树冠管理实践对葡萄园小气候的影响：新小气候指数的定义
DOI：
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发表时间：
2012
影响因子：
1.9
通讯作者：
L. Genesio
中科院分区：
文献类型：
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作者：
A. Matese;A. Crisci;F. D. Di Gennaro;E. Fiorillo;J. Primicerio;P. Toscano;F. Vaccari;S. Di Blasi;L. Genesio
气象参数对葡萄（Vitis vinifera L.）产量和品质有重要影响。大多数常用的生物气候指数都不适合代表室内微气象变化，特别是在葡萄成熟过程中重要的亚日动态。基于3年（2008年、2009年、2010年）的集群内部温度、冠层空气温度和太阳辐射的逐时统计数据，构建了一套新的微气象指标，并评价了它们区分不同冠层管理技术引起的微气候日循环差异的能力。数据是在四个种植桑娇维塞和赤霞珠的葡萄园中收集的，这些葡萄园位于意大利托斯卡纳的三个气候带。以该数据集为基础，采用两种不同的亚日时间分割标准定义了一些新的微气象指数：基于固定小时间隔的静态和基于太阳高度日分割的动态。结果表明，基于亚日数据的指数比日指数更能反映葡萄园小气候，并能突出树冠管理方式引起的小气候差异。对处理更敏感的指数是与聚类参数截获的太阳辐射有关的指数，以及相对于代表一天中几个小时微气象参数平均值的大白天指数。所提出的指标增强了不同冠层管理方式引起的微气象条件的特征，从而评估了葡萄园内环境参数的空间变异性。
Meteorological parameters have a crucial influence on grapevine (Vitis vinifera L.) production quantity and quality. Most of the commonly used bioclimatic indices are not appropriate to represent intravineyard micrometeorological variability, in particular the subdaily dynamics that are important in grape maturation processes. The aim of this research was to compile a new set of micrometeorological indices and evaluate their capacity to discriminate the differences in the microclimatic daily cycle induced by different canopy management techniques, based on a statistical data set of three years (2008, 2009, 2010) of hourly data of cluster internal temperature, canopy air temperature, and solar radiation intercepted by the cluster. Data was collected in four vineyards planted with Sangiovese and Cabernet Sauvignon, located in three climatic zones of Tuscany (Italy). Starting from this data set, some new micrometeorological indices were defined using two different criteria for subdaily time segmentation: static, based on fixed hourly intervals, and dynamic, based on solar height daytime segmentation. Results showed that indices based on subdaily data better provide a better representation of vineyard microclimate than daily indices and are able to highlight microclimatic differences induced by canopy management practices. The indices more sensitive to treatments are those related to the solar radiation intercepted by the cluster parameter and relative to the Broad Daylight Index, which represent the average of micrometeorological parameters in the middle hours of the day. The proposed indices enhance the characterization of micrometeorological conditions induced by different canopy management practices and, therefore, the assessment of the within-vineyard spatial variability of environmental parameters.