水土保持学报2018，Vol.32Issue(2)：45-51,73,8.DOI:10.13870/j.cnki.stbcxb.2018.02.007
入渗水量对重庆四面山草地优先流影响的定量评价
Quantitative Evaluation of Effects of Infiltration Amounts on Preferential Flow in Grassland in Simian Mountain of Chongqing
摘要
Abstract
To quantitatively evaluate the effects of three different infiltration amounts on soil preferential flow,the morphological image processing technology,statistical sample variability analysis,variance analysis,and correlation analysis were used in this study.G20,G40,and G60 were taken to represent these plots with three different infiltration amounts (20 mm,40 mm,and 60 mm respectively).Dyeing experiments with Brilliant Blue FCF (C.I.Food Blue 2) were conducted in grassland in Simian Mountain of Chongqing.The results showed that:(1) Dye coverage generally decreased with the increasing soil depth,and sharp decreases were found at the depths of 3 cm in G20 and 12 cm in G40,respectively.(2) The total dye coverage and length index of preferential flow were positively correlated with infiltration amounts (P＜0.01).(3) Water infiltration was promoted to deeper soil layers as the infiltration amounts increased,and the maximum depth of water infiltration reached 60 cm.(4) The non-uniformity of dyed coverage in preferential flow area and the maximum infiltration depth decreased with the increasing infiltration amounts with their variation coefficients ranging from 1.88 to 0.47,and 0.52 to 0.07,respectively.However,the effects of infiltration amounts on actual infiltration depth was even more complicated.关键词
入渗水量/优先流/染色面积/入渗深度/变异系数Key words
infiltration amount/preferential flow/dyed area/infiltration depth/variation coefficient分类
农业科技引用本文复制引用
姚晶晶,程金花,张洪江,李明峰,阚晓晴..入渗水量对重庆四面山草地优先流影响的定量评价[J].水土保持学报,2018,32(2):45-51,73,8.基金项目
国家科技支撑计划项目“长江防护林质量调控与高效经营经营技术研究与示范”(2015BAD07B040304) （2015BAD07B040304）
水体污染控制与治理科技重大专项“妫水河世园会及冬奥会水质保障与流域生态修复技术与示范”(2017ZX07101-004-003) （2017ZX07101-004-003）
北京市科技计划项目“怀柔小流域河岸带生态恢复技术研究”(Z151100001115001) （Z151100001115001）
北京林业大学青年教师科学研究中长期项目“防护林结构配置机理及其生态功能研究”(2015ZCQ-SB-03) （2015ZCQ-SB-03）
