title: [Rainfall redistribution in subalpine Quercus aquifolioides forest in upper reaches of Minjiang River].
abstract: Based on the meteorological data from June to September 2007, the rainfall redistribution in subalpine Quercus aquifolioides forest in the upper reaches of Minjiang River was investigated by permanent plot method. The results showed that the total rainfall outside the forest was 486.7 mm, and the throughfall, stemflow, and canopy interception accounted for 82.6%, 0.9%, and 16.5% of the total rainfall, respectively. The throughfall and stemflow had significant linear relationships with rainfall (P < 0.01, n = 49), and the relationships of throughfall ratio and stemflow ratio with rainfall could be described with nonlinear curves. When the rainfall outside the forest was more than 3.2 mm, stemflow would happen, and there existed a significant exponential (R2 = 0.623) relationship between the stemflow volume and the tree basal area. The canopy interception rate decreased hyperbolically with the increase of rainfall, being significantly negatively correlated with the rainfall amount, duration, and intensity as well as the air relative humidity during rainfall (P < 0.01, n = 49), but positively correlated with wind velocity (P < 0.01, n = 49).
authors.affiliation: Jiangsu Provincial Key Laboratory of Forestry Ecological Engineering, Nanjing Forestry University, Nanjing 210037, China. hchqing@126.com
authors.forename: Chang-Qing
authors.initials: CQ
authors.lastname: He
authors.forename: Jian-Hui
authors.initials: JH
authors.lastname: Xue
authors.forename: Yong-Bo
authors.initials: YB
authors.lastname: Wu
authors.forename: Lei-Yan
authors.initials: LY
authors.lastname: Zhang
authors.forename: Chong
authors.initials: C
authors.lastname: Liu
authors.forename: Xing-Liang
authors.initials: XL
authors.lastname: Liu
mesh_terms: D002681:China; D017753:Ecosystem; D011157:Population Dynamics; D029963:Quercus / Q000254:growth & development*; D011891:Rain; D045483:Rivers; D014872:Water Movements