江西省草面温度变化特征及与气象因子的相关分析

通过对江西省8个观测站连续2年的观测数据进行分析，表明草面温度具有以下基本特征：江西省草面温度的年平均值为20．4℃，且由南向北逐渐降低；草面温度在1d内有1个最高值和1个最低值；草面温度日较差的大小和纬度、季节、自然地理条件、天气等因素有关。草面温度与气象因子有着重要的关系：草面温度与气温呈现明显的正相关，且草面温度的绝对值大、振幅大，累积频率也不相同；草面温度与地面温度也为正相关，且草面温度低于地面温度，草面温度在不同季度的升温和降温速度与地面温度不一致；天空状况显著影响着草面温度的变化，而且影响程度随着季节的变化而不同。

Grass Land Temperature Characteristics and Its Correlation with Meteorological Factors in Jiangxi

Based on 2 years continuous observation data of grass land temperature in Jiangxi province, the change characteristics of grass land temperature and its correlation with meteorological factors were analyzed. The results indicated that the annual average of grass land temperature was 20.4 ℃. Diurnal changes of grass land temperature were obvious. The highest and the lowest grass land temperature affected by latitude, season, natural and geographical conditions, weather and other factors. Commonly, there was a positive correlation between grass land temperature and air temperature, and the grass land temperature was higher. There was a positive correlation between grass land temperature and non-vegetation land temperature, but the grass land temperature was lower. Grass land temperature was greatly influenced by cloud amount.