文献类型：期刊文献

英文题名：Effects of forest structure on hydrological processes in China

作者：Sun, Jiamei[1] Yu, Xinxiao[1] Wang, Henian[2] Jia, Guodong[1] Zhao, Yang[3] Tu, Zhihua[4] Deng, Wenping[5] Jia, Jianbo[6] Chen, Jungang[7]

第一作者：Sun, Jiamei

通信作者：Yu, XX[1]

机构：[1]Beijing Forestry Univ, Coll Soil & Water Conservat, Beijing 100083, Peoples R China;[2]Chinese Acad Forestry, Inst Wetland Res, Beijing 100091, Peoples R China;[3]China Inst Water Resources & Hydropower Res, Beijing 100044, Peoples R China;[4]China Liaoning Shihua Univ, Fushun 113001, Peoples R China;[5]Jiangxi Agr Univ, Nanchang 330045, Jiangxi, Peoples R China;[6]Cent South Univ Forestry & Technol, Changsha 410004, Hunan, Peoples R China;[7]Peking Univ, Beijing 100871, Peoples R China

年份：2018

卷号：561

起止页码：187-199

外文期刊名：JOURNAL OF HYDROLOGY

收录：;EI(收录号：20184606062694);Scopus(收录号：2-s2.0-85056232285);WOS:【SCI-EXPANDED(收录号:WOS:000439401800015)】；

基金：The authors are greatly indebted to the National Key Technology R&D Program, P.R. China (grant number 2015BAD07B030201) and 2011 Collaborative Innovation Center (grant number PXM2016_014207_000038) for the support given to this research.

语种：英文

外文关键词：Forest; Structure; Rainfall partitioning; Evapotranspiration; Factor

摘要：There are serious concerns between forest and water quantity, Chinese extensive land area makes the relationship more complicated, thus, the effects of forest structure on hydrological processes in China were not fully comprehended. In this research, forest's hydrological functions, including rainfall partitioning, litter interception, evapotranspiration (ET), were analyzed in China. The results showed that throughfall was the largest proportion of gross precipitation with fraction between 69.3 +/- 8.8% and 84.4 +/- 5.6%. Then was canopy interception which varied from 14.6 +/- 1.4% to 29.1 +/- 3.3%. Throughfall was correlated with gross precipitation, canopy thickness and canopy density. Canopy interception was correlated with gross precipitation, LAI, canopy density, biomass, mixed degree, uniform angle index, aggregation index. Stemflow accounted for only 1.2 +/- 0.32% of gross precipitation, with the greatest fraction of 2.1 +/- 0.2% in XBH site and the least fraction of 0.3 +/- 0.1% in DB site. Gross precipitation was the main factor in determining stemflow. DB site had the greatest litter interception (7.7 +/- 0.8 mm) and HB site had the least (0.9 +/- 0.3 mm). Litter interception had closer correlation with undecomposed litter mass (0.66) than total litter mass (0.46). Path-coefficient analysis showed that stand density, Shannon-Wiener index, litter mass, size ratio had greater impact on litter interception than other factors. ET was mainly influenced by precipitation, and it also correlated with LAI, canopy density and biomass. In north China, ET percentage (the ratio of ET and precipitation) was 82.7-109.5%, while it decreased to 63.1-88.5% in south China, ET demand in XBS site was larger than precipitation. ET percentage increased with increasing latitude and elevation, decreased with increasing temperature.