首页|降雨因子对沂蒙山区不同土地利用方式径流小区产流产沙的影响

降雨因子对沂蒙山区不同土地利用方式径流小区产流产沙的影响

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
  • 维普
[目的]研究降雨量、降雨强度、降雨历时等降雨因子对沂蒙山区小流域不同土地利用方式径流小区产流产沙的影响，为该区水土流失防治、水土保持规划、生态建设等提供参考。[方法]对沂蒙山区不同土地利用方式径流小区（自然荒坡和荞麦、野生牧草和花生）两两对照并且进行连续3a的定位观测，对观测数据进行统计分析和显著性检验。[结果]（1）降雨量与各径流小区产流量的相关性显著（p＜0．01），与荞麦小区和花生小区产沙量的相关性显著（p＜0．01），与自然荒坡小区和野生牧草小区的产沙量相关性较差。（2）平均降雨强度（I）与各径流小区的产流量和产沙量的相关性均不显著。10 min最大降雨强度（I10）和30 min最大降雨强度（I30）与各径流小区产流量以及荞麦小区、花生小区的产沙量均具有较好的相关性，其中30 min最大降雨强度（I30）的相关性最好。（3）降雨历时与荞麦径流小区的产流量和产沙量相关性显著（p＜0．01），与其他径流小区的产流量和产沙量虽皆呈正相关但相关性均不显著。[结论]降雨量（P），10 min最大降雨强度（I10），尤其是30 min最大降雨强度（I30），降雨历时等降雨因子在沂蒙山区坡面产流产沙过程中都起到了不同程度的作用，不同的土地利用方式也是影响坡面产流产沙的重要因子。
Effects of Rainfall Factors on Runoff and Sediment Yield of Runoff Plots with Different Land Use Patterns in Yimeng Mountainous Area
Objective] T he objective of this study is to investigate the effects of rainfall factors such as rain‐fall ,rainfall intensity and rainfall duration on runoff and sediment yield of runoff plots in small watershed of Yimeng mountainous area in order to provide the basis for soil erosion control ,soil and water conservation planning and ecological construction in the area .[Methods] Runoff plots with different land use patterns (natural slope land ,buckwheat ,wild forage and peanut land) in Yimeng mountainous area were monitored for 3 consecutive years . The observation data were statistically analyzed ,and the significance test were conducted .[Results] (1) The correlation coefficient between rainfall and the runoff yield of each runoff plot was significant(p<0 .01) ,the correlation coefficient between rainfall and sediment yield of buckwheat and peanut plot was significant as well(p<0 .01) .Poor correlation was found between the rainfall and the sedi‐ment yield in both the natural slope land and wild forage plot .(2) The correlation between average rainfall intensity(I) and runoff and sediment yield was not significantly in each runoff plot .The maximum rainfall intensity of 10 min(I10 ) and the maximum the rainfall intensity of 30 min(I30 ) showed significant correlations with runoff yield and sediment yield of the buckwheat plot and the peanut plot .In particular ,I30 exhibited&nbsp;the greatest correlation with runoff and sediment yield .(3) The rainfall duration was significantly (p<0 .01) related with the runoff and sediment yield in the buckwheat plot ,while no significant relation was found in other plots .[Conclusion] Rainfall factors including rainfall (P) ,rainfall intensity of 10 min(I10 ) ,rainfall intensity of 30 min(I30 ) and rainfall duration influence runoff and sediment yield from hill slope of Yimeng mountainous area .Different land use patterns were also important factors that influence runoff and sediment yield on slope land .

Yimeng mountainous arearunoffsediment yieldrainfallrainfall intensityrainfall duration

林锦阔、李子君、许海超、姜爱霞

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山东师范大学地理与环境学院，山东济南250014

沂蒙山区 径流量 产沙量 降雨量 降雨强度 降雨历时

国家自然科学基金

41101079

2016

10.13961/j.cnki.stbctb.2016.05.009

水土保持通报
中国科学院水利部水土保持研究所 水利部水土保持监测中心

水土保持通报

CSTPCDCSCD
影响因子：0.658
ISSN：1000-288X
年,卷(期)：2016.36(5)
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