水土保持学报2017，Vol.31Issue(3)：209-215,7.DOI:10.13870/j.cnki.stbcxb.2017.03.036
不同降雨强度下北京山区典型林地土壤水分时空变化特征
Spatial and Temporal Variation Characteristics of Soil Moisture in Typical Forest Land in Beijing Mountain Region Under Different Rainfall Intensity
摘要
Abstract
The effects of different rainfall intensity on spatial and temporal variation characteristics of soil moisture of different forest types were studied based on positioning and long term observation and data processing.Soil moisture of the Quercus variabilis forest land and the Pinus tabulaeformis forest land in Beijing region was monitored by the ECH2O monitoring system and the EM50 data acquisition system.The results showed that:(1) The daily soil water storage amount changed significantly with the precipitation,howeve,the average monthly soil water storage increased with the increasing amount of rainfall.(2) Vertically,the increase rate of soil water storage in the 0-40 cm soil layer of the Q.variabilis and P.tabulaeformis forest land decreased with the increase of the rainfall intensity,and the average increase rate of soil water storage of the Q.variabilis forest land (94.17％) was higher than that of the P.tabulaeformis forest land (84.19％),while the soil water storage rate in the 40-100 cm soil layer showed an increasing trend,and the average increase rate of soil water storage of the P.tabulaeformis forest land (15.81％) was greater than that of the Q.variabilis forest land (5.83％).(3) Soil water storage in the same layer was significantly different between the Q.variabilis and P.tabulaeformis forest land (p ＜ 0.05),and it was also significantly different between different soil layers in the same forest land (p ＜ 0.05).In terms of the spatial and temporal characteristics of soil moisture change in the Q.variabilis and P.tabulaeformi forest land,soil water storage distributions of the two forest types were different.Therefore,it worths considering mixing the two species together in afforestation.The results of this study could provide a reference and theoretical basis for the construction and management of vegetation in the mountainous areas of Beijing.关键词
北京山区/降雨强度/土壤储水量/时空变化Key words
Beijing mountain region/rainfall intensity/soil water storage/spatial and temporal variation characteristics分类
农业科技引用本文复制引用
侯贵荣,余新晓,刘自强,贾国栋,李瀚之,刘文娜,李勇..不同降雨强度下北京山区典型林地土壤水分时空变化特征[J].水土保持学报,2017,31(3):209-215,7.基金项目
国家重点研发计划项目(2016YFC0500802) （2016YFC0500802）
林果业生态环境功能提升协同创新中心(PXM2017_014207_000038) （PXM2017_014207_000038）
北京市科技计划项目(Z151100001415002) （Z151100001415002）
