福建建瓯万木林柑橘与锥栗凋落物数量、组成及动态

Amount,Composition and Seasonal Dynamics of Litterfall in Citrus reticulata Blanco and Castanea henryi in Wanmulin Nature Reserve,Fujian

2010年1—12月,对福建省建瓯市万木林保护区内的柑橘(Citrus reticulata Blanco)和锥栗(Castanea henryi)凋落物的组成及动态进行观测研究,结果表明:柑橘和锥栗的年凋落物量分别为2 315.47±149.02 kg.hm-2.a-1和2 414.62±211.05 kg.hm-2.a-1,凋落物均以落叶为主,分别占到年总凋落物量的57.6%和50.7%,落花和落果在凋落物中所占比例较大;经方差分析检验,柑橘和锥栗的落枝、落花和杂物差异显著(P<0.05),其他组分差异不显著;柑橘与锥栗凋落物量季节变化曲线均呈双峰型,柑橘凋落物量在3月和7月出现2次较大峰值,而锥栗凋落物量峰值则出现在6月和11月.

A study was carried out to determine the amount, composition and seasonal dynamics of litterfall of Citrus reticulata Blanco and Castanea henryi from January 2010 to December 2010 in Wan- mulin Nature Reserve, Fujian province, China. In the two study plantations, the mean annual litter fall production were 2 315.47 ±149.02 kg· hm^-2 and 2 414.62 ± 211.05 kg · hm^-2, with leaves being major component of litter during the entire year, which accounted for 57.6% and 50. 7% of the total production, respectively. The analysis of variance showed that there is a significant difference in branches, flowers and miscellany between the two plantations （P 〈 0. 05）, with no significant differ- ence in other components. In Citrus orchard, litterfall occurred irregularly from month to month, reaching the two peaks in March and July. The litterfall production of Castanea henryi exhibited one peak in June and another one in November.