摘要
比较分析了保留带与造林带的小气候和水分效应结果显示：①保留带的日均温比造林带低0．6～2．6℃，每天13：00时两带温差最大；保留带的月均温比造林带低0．5～2．2℃，两带6～8月的月均温差最大．②保留带的日均温度比造林带高10～15％，每天13：00时两带湿度相差最大；保留带的月均湿度比造林带高8．3～15．5％，两带6～8月的月均湿度相差最大．③造林带的光明强度是保留带的30～50倍，是未砍带的43～58倍．保留带和造林带不同位点的光照强度随一天中时刻的变化而发生更替．④保留带灌丛对降雨的拦截率为22．61％～64．15％．⑤保留带与造林带和未砍带土壤的自然含水率差异主要出现在0～10cm的表土层，且雨季的差异大十旱季的差异在雨季，保留带土壤的含水宰大于造林带的含水率，在旱季则相反．
The microclimate and water in both preservation and silviculture belts were studied. The dally and monthly mean temperatures in the preservation belt(PB) were 0.6 ~ 2.6℃ and 0.5 ~ 2.2 ℃ lower than those in the silviculture belt(SB). Similarly, the daily and monthly mean relative moistures in PB were 10 ~ 15% and 8. 3 ~ 15 .5 % higher than those in SB. The greatest differences of temperature and relative moisture in PB and SB occurred at 13:00 o' clock everyday, and the greatest monthly differences of those appeared in June ~ August. The light illumination in SB was 30 ~ 50 tinies slronger lhan that in PB and 43 ~ 58 times than that in the control(shrub). Interestingly, the light illumination in different sites in PB and SB differed with different time in a day. The shrub in PB could intercept 22. 61 ~ 64. 15 % of total rainfall. Generally. the difference of tile natural water contents in soil of PB, SB and the control 'lainly occurred in the soil 0 ~ 10 cm deep. The water content in PB soil was greater than thai in SB during rainy seasons.
出处
《应用与环境生物学报》
CAS
CSCD
1998年第3期298-304,共7页
Chinese Journal of Applied and Environmental Biology
基金
国家"八五"攻关专题
中国科学院成都地奥科学基金
关键词
保留带
造林带
小气候
水分
降雨截留
preservation belt
silviculture bell
microclimate
rainfall interception
