CAJ | 학술논문

运用径流小区法研究了闽北不同土地利用方式水土流失与降雨量的关系.结果表明：相同降雨类型下不同土地利用方式的水土流失量具有很大差异.裸露地（对照）小雨时也可能产生水土流失,而大雨以上降雨会产生严重水土流失;具有一定植被覆盖且采取水土保持措施的果园和锥栗林的径流量和泥沙量大幅度减少;而植被覆盖良好的杉木林即使大雨以上降雨也仅产生极轻微的水土流失.降雨量与径流量均呈极显著线性相关,降雨量越大,径流量越大;而降雨量与土壤流失量的相关性明显小于降雨量与径流量的相关性,影响土壤流失量的因素比径流量复杂.
운용경류소구법연구료민북불동토지이용방식수토류실여강우량적관계.결과표명：상동강우류형하불동토지이용방식적수토류실량구유흔대차이.라로지（대조）소우시야가능산생수토류실,이대우이상강우회산생엄중수토류실;구유일정식피복개차채취수토보지조시적과완화추률림적경류량화니사량대폭도감소;이식피복개량호적삼목림즉사대우이상강우야부산생겁경미적수토류실.강우량여경류량균정겁현저선성상관,강우량월대,경류량월대;이강우량여토양류실량적상관성명현소우강우량여경류량적상관성,영향토양류실량적인소비경류량복잡.
The relationship between rainfall and losses of soil and water in diverse land-use types of Northern Fujian was investigated by establishment of runoff plot.The results indicated that on the premise of same rain type,significant differences in soil and water losses for various land were found.In the control,even light rain could bring soil and water losses.While for orchard and castanea henryi forest,runoff and sediment yield both reduced greatly.Regarding to Chinese fir with favorable vegetative coverage,minimum soil and water losses were produced even by the rainstorm.Rain types had different effects on soil and water losses.There was extremely significant positive correlation between rainfall and runoff amount,while not-significant correlation between rainfall and soil loss was found.