岷江上游两种亚高山林分枯落物层水文特征研究  

Hydrological Characteristics of Two Typical Subalpine Forests in The Upper Reaches of Minjiang River

作　　者：薛建辉[1] 郝奇林 何常清[1] 吴永波[1] 

机构地区：[1]南京林业大学江苏省林业生态工程重点实验室,江苏南京210037 [2]扬州市野生动植物和湿地保护管理站,江苏扬州225009

出　　处：《水土保持学报》2009年第3期168-172,共5页Journal of Soil and Water Conservation

基　　金：国家重点基础研究发展规划项目(2002CB111501)

摘　　要：研究对比了岷江上游岷江冷杉林和川滇高山栎林枯落物层的水文特征,结果表明,川滇高山栎林凋落呈现多峰型,凋落高峰出现在6月,8月和10月;而岷江冷杉林凋落则为双峰型,凋落高峰出现在10月份和1月份。川滇高山栎林的枯落物未分解层、半分解层和已分解层的现存量分别为4.00 t/hm2,6.77 t/hm2和14.43t/hm2;而岷江冷杉林的枯落物未分解层、半分解层和已分解层的现存量分别为1.14 t/hm2,7.40 t/hm2,11.99t/hm2。川滇高山栎林和岷江冷杉林枯落物总最大持水量为分别为(60.23±11.82)t/hm2和(66.79±24.05)t/hm2。两种森林群落类型枯落物持水量(mm)与浸水时间(h)呈较好的对数函数关系,枯落物未分解层、半分解层和已分解层的持水量与浸水时间之间均呈极显著相关(p<0.001)。This study compared the hydrological characteristics of the little in Abies faxoniana and Quercus aquifolioides forest in the upper reaches of Minjiang River. The results showed the change of litter represented multi-peak, and falling peaks were June, August and October in Q. aquifolioides forest. However, the change of litter represented double peak, and falling peaks were October and January in A. faxoniana forest. The standing crop of undecomposed litter, half-decomposed litter and decomposed litter was 4. 00 t/hm^2, 6.77 t/hm^2 and 14.43 t/hm^2 in Q. aquifolioides forest respectively. And the standing crop of undecomposed litter, half-decomposed litter and decomposed litter was 1.14 t/hm^2, 7.40 t/hm^2 and 11.99 t/hm^2 in A. faxoniana forest respectively. The total maximum of Q. aquifolioides forest＇s water-holding was （60. 23±11.82） t/hm^2, and that of A. faxoniana forest ＇ s was （66. 79 ±24. 05） t/hm^2. There was a logarithmic function relation between the water-holding capacity and immersed time of litter in the two different forest. Also there was a highly significant correlation between the water-holding capacity and the time of immersing in water of undecomposed litter, half-decomposed litter and decomposed litter in both forests （p〈0. 001）.

关 键 词：冷杉林 川滇高山栎林 枯落物 水文特征 

分 类 号：S715[农业科学—林学]