A Study On The Transmission And Distribution Of Rainfall In Hani-peat Mire

Through to rainfall,evaporation and runoff measurement of hani-peat mire,Research the rainfall assignment proportional relationshi of hani-peat mire in the grows season of 2008, Summarized the runoff rule of peat mire,and analyzed two kind of plants evaporation contrast relations,Preliminary discussion the rainfall in mire transmission and assignment function.The main conclusion is as follows:(1)Through to rainfall,evaporation and runoff diretc measurement of hani-perat mire, as initial data.Research the rainfall assignment proportional of hani-peat mire,Rainfall amount two-thirds to seven-eights runoff the mire,only 1%of rainfall through infitration fuction permeates peatlayer,Other rainfall interception by sodlayers,Supplies the plant transpiration and water surface evaporation.(2)Through to research the runoff of plot in hani-peat mire,build the instantaneous runoff model of hani-peat mire,Q=0.0009(t-3.2155)^14.5366e^-1.9246t,With this model can knows the instantaneous runoff of plot in hani-peat mire,Carries on the integral to the time can obtain total outflow.This model is build on measurement small range plot,and hypothesis the surface only then rainfall inflow,if use this modle estimation the all outflow of mire that need perfect this modle,and considering all environmental factors,meanwhile need longterm monitoring data support.(3)Through rainfall intensity,precipitation time influence the runoff of peat mire,we can knows,The influence of rainfall intensity to outflow is more than the influence of precipitation time to outflow.Respectively build regression equation about rainfall intensity with outflow and precipitation time with outflow:W=0.03I³+0.02I²+0.04; W-0.02t³+0.03.Through analyzed the correlation coefficient about outflow with rainfall intensity and precipitation time,conclusion that the correlation coefficient of rainfall intensity is 0.637,correlation coefficient of precipitation time is 0.496,show that curve fitting of outflow and rainfall intensity is well,means can use rainfall intensity estimate outflow, however,the curve fitting of outflow and percipitation time is not good,so we had better not use percipitation time to estimate outflow.(4)From comparative analysis of evaporation about carex and planus,we conclusion that,the daily evaporation of carex is more than planus,analysis relationship about carex and planus with temperature and weed speed,evaporation of planus is significant influence by temperature,then is weed speed;evaporation of carex is significant influence by weed speed, then is temperature.Show that different mire plant is different influence by environmental factors.