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根据喀斯特峰丛洼地次生林自动观测气象站连续气象观测资料,以农田气象资料为对照,初步分析了次生林小气候特征的变化规律。结果表明,喀斯特峰丛洼地次生林对小气候存在明显影响。林内太阳辐射、平均气温和风速相对林外均明显偏低,而相对湿度林内显著大于林外。林内同林外比,太阳辐射年平均降低40.6%,气温偏低0.3℃-5.3℃,相对湿度偏高0.9%-11.4%;风速平均降低0.57 m/s。林内各气象因子变化幅度均明显小于林外,次生林对各气象因子影响明显。各气象因子之间相关性显著,林内外温度相关性最强。
According to the continuous meteorological observation data of automatic observation meteorological stations in the secondary forest of karst peak-cluster depression, the change law of the microclimate characteristics of the secondary forest was analyzed based on the farmland meteorological data. The results showed that the secondary forests in the karst cluster-cluster depression had a significant effect on the microclimate. The solar radiation inside the forest, the average temperature and the wind speed were obviously lower than those outside the forest, while the relative humidity was significantly greater in the forest than in the forest. The ratio of solar radiation inside and outside the forest, solar radiation average annual reduction of 40.6%, the temperature is low 0.3 ℃ -5.3 ℃, high relative humidity 0.9% -11.4%; wind speed average reduction of 0.57 m / s. The changes of the meteorological factors in the forest were significantly less than those in the forest, and the secondary forest affected the meteorological factors significantly. The correlation between the meteorological factors is significant, and the correlation between the temperature inside and outside the forest is the strongest.