摘要
在江西九连山常绿阔叶林区海拔约610m 高度的林外气象观测场连续进行了15a、1982～1996)的观测。年平均值气温16.7℃,降水量1954.6mm。相对湿度85%,水面蒸发(小型)836.9mm。年降水量的年际变化较大为1502.1～2469.3mm。月降水量的年际变化也较大。观测结果表明,这里四季分明,气温极端最高37℃,极端最低-7.4℃。1a 中相对湿度均较高.最低月平均77%。雨季旱季明显,2月～9月为雨季,月平均降水量最低147.9mm;10月～1月为旱季,月平均降水量最高为70.7mm。与林外比较,林内气温稍低,特别是春、夏季。气温日较差小,年较差稍小。地温也低于林外,特别是夏季,相对湿度则显著高于林外。
Meteorological observational station was located outside forest at evergreen broad-leaved forest area in the Jiulian mountains,and the height was about 610m above sea level.The observation was con- tinued in 15 years(1982～1996).Annual average:air temperature 16.7℃,precipitation 1 954.6mm,rela- tive humidity 85%,water evaporation(micro-evaporator)836.9mm.The variation of annual precipitation was 1 502.1～2 469.3mm,and the variation of monthly precipitation inter years was also notable.Ob- served results show that the difference among four seasons was clear.Extreme highest and lowest air temperature were 37 C and-7.4℃.The difference between rain-season and dry-season was also clear. Feb.～Sept.were rain-season,and minimum monthly average precipitation was 147.9mm.Oct.～Jan. were dry-season,and maxmum monthly average precipitation was 70.7mm.As compared with the outside of forest,air temperature inside forest was lower a little,especially in spring and summer.The distance of annual air temperature was less a little,and the distance of daily air temperature was less.Ground tem- peratue was lower,especially in the snmmer.Relative humidity was distinctly higher.
出处
《资源科学》
CSSCI
CSCD
北大核心
2001年第z1期3-14,共12页
Resources Science
关键词
常绿阔叶林区
气候
年际变化
极值
林内小气候
Evergreen broad-leaved forest area
Climate
Variation inter years
Extreme value
Microclimate inside forest
