栓皮栎幼苗叶气温差随太阳辐射和风速变化的列线研究

doi:10.3969/j.issn.1000-6362.2016.02.011

摘要/Abstract

摘要：

为了探索太阳辐射、气温和风速对栓皮栎幼苗叶温(LT)的影响，以及LT与Gates气候空间列线的一致性，在晴天条件下，控制小气候风速因子，测定气温、LT和太阳辐射，研究不同风速条件下栓皮栎幼苗叶气温差（LATD）随太阳辐射的变化。并依据Gates气候空间理论和图解方法，确定栓皮栎幼苗的气候空间列线。结果表明：静风时栓皮栎幼苗LATD随太阳辐射的增加而增加，二者呈线性关系；冠层温度衰减（CTD）随太阳辐射强度增加而增加，但随着风速的增大，CTD随太阳辐射而增加的幅度逐渐减小。风速为0.8m·s^-1时，CTD随太阳辐射变化的趋势线斜率逐渐趋近于0，表明不同风速条件下的栓皮栎幼苗叶片CTD随着太阳辐射强度的增加呈线性增加趋势；随着风速的增加，该线性关系形成斜率逐渐变小的列线，列线与Gates气候空间理论的上限趋势一致，列线上的点与生物学上限温度(BMT)相加可以表达栓皮栎幼苗叶片气候空间上限。

关键词: 栓皮栎, CTD, 太阳辐射, 风速, 气候空间, 列线

Abstract:

In order to explore the effect of solar radiation, air temperature and wind speed on leaf temperature (LT) of Quercus variabilis, and to determine the consistency of LT and the series lines of Gates climate space, LT and air temperature (Ta) and solar radiation (R) were measured in clear day with the conditions of controlled wind speeds. The relationship between leaf air temperature difference (LATD) and solar radiation at different wind speeds was studied. The series lines of climate space of Quercus variabilis were determined by using Gates theory climate space and graphic method. The results showed LATD of Quercus seedlings increased linearly with the radiation increasing. Canopy temperature depression (CTD) of Quercus variabilis also increased with radiation increasing, but affected by the wind speed. CTD tended to be zero when wind speed was 0.8m·s^-1. CTD of Quercus seedlings changed as R linearly with the radiation increasing and different wind speeds. The linear relationship was series lines and decreased with wind speed increasing. The series lines were in accordance with the upper limits of Gates theory climate space. The upper limit of climate space could be expressed by adding up biological maximum temperature (BMT) and CTD value on series lines with different wind speeds.

Key words: Quercus variabilis, CTD, Solar radiation, Wind speed, Climate space, Series lines

王佩舒，王威红，陈景玲，王谦，李国怀. 栓皮栎幼苗叶气温差随太阳辐射和风速变化的列线研究[J]. 中国农业气象, 2016, 37(02): 213-221.

WANG Pei-shu, WANG Wei-hong, CHEN Jing-ling, WANG Qian, LI Guo-huai. Series Lines on Change of Leaf Temperature Difference of Quercus variabilis with Solar Radiation and Wind Speed[J]. Chinese Journal of Agrometeorology, 2016, 37(02): 213-221.

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