摘要
[目的]研究坡面产流产沙过程对不同土地利用方式的响应于砒砂岩区生态保护与高质量发展具有重要意义。[方法]以十大孔兑罕台川流域的合同沟小流域为研究区,选取该区2016—2021年降雨产流产沙监测数据,应用聚类分析、双因素方差分析等,开展连续性动态监测研究,进而揭示砒砂岩区坡面产流产沙与不同土地利用方式的时空动态变化关系。[结果](1)次降雨按历时、雨强和雨量可分为3类,包括A类(历时短、雨量集中、高强度),B类(雨量较多、历时较短、中强度),C类(历时长、小雨强、雨量分散),C类导致水土流失能力最弱;(2)A,B类降雨产流产沙,排列顺序为乔木林地<灌草地<人工草地<天然草地<农作物地<裸地;C类降雨产流,排列顺序为乔木林地<天然草地<灌草地<人工草地<农作物地<裸地,产沙,排列顺序为人工草地<乔木林地<天然草地<灌草地<农作物地<裸地,且相同土地利用方式径流深和土壤流失量排序为C<B<A;(3)不同土地利用方式的径流深或土壤流失量对雨型响应的坡度效应略有差异,主要存在于裸地、农作物地与其他土地利用方式。[结论]砒砂岩区坡面水土流失的治理和生态恢复,应考虑雨型和坡度对不同土地利用方式产生的复合作用。
[Objective]The study of slope runoff and sediment yield processes in response to different land use type is of great significance for the ecological protection and high-quality development of Pisha sandstone areas.[Methods]The Hantaichuan watershed of the sub-watershed of the ten largest Kongtui was taken as the study area.The rainfall-produced flow and sediment production monitoring data from^(2)016—2021 in the area were selected.Cluster analysis and two-factor analysis of variance were applied to carry out a continuity and dynamic monitoring study,which in turn revealed the relationship between the temporal and spatial dynamics of the slope runoff and sediment yield in the Pisha sandstone area and different land use types.[Results](1)The rainfall could be divided into three categories according to the duration,intensity and rainfall,including category A(short duration,concentrated rainfall and high intensity),category B(heavy rainfall,short duration,medium intensity),and category C(long duration,light rainfall intensity,scattered rainfall).Category C resulted in the weakest ability of soil erosion.(2)Type A and type B rainfall induced sediment,the order was tree forest<shrub land<artificial grassland<natural grassland<crop land<bare land.The order of type C rainfall-runoff production was tree forest<natural grassland<shrub land<artificial grassland<crop land<bare land,and the order of sediment production was artificial grassland<tree forest<natural grassland<shrub land<crop land<bare land,and the order of runoff depth and soil loss amount of the same land use mode(only bare land and crop land)was C<B<A.(3)The slope effect of runoff depth or soil loss amount on the response of rainfall pattern was slightly different among different land use types,which mainly existed among bare land,crop land and other land use type.[Conclusion]The management and ecological restoration of slope erosion in Pisha sandstone area should take into account the compounding effect of rainfall patterns and slope gradients have on different land use types.
作者
马郡粒
杨振奇
郭建英
张铁钢
王普
马培渊
Ma Junli;Yang Zhenqi;Guo Jianying;Zhang Tiegang;Wang Pu;Ma Peiyuan(College of Desert Control Science and Engineering,Inner Mongolia Agricultural University,Hohhot 010010,China;Yinshanbeilu National Field Research Station of Steppe Eco-hydrological System,China Institute of Water Resources and Hydropower Research,Hohhot 010010,China;Ordos in Dalate Banner water development center,Ordos,Inner Mongolia 017000,China)
出处
《水土保持研究》
CSCD
北大核心
2024年第1期136-143,共8页
Research of Soil and Water Conservation
基金
内蒙古自治区自然基金(2021BS04009)
内蒙古自治区科技兴蒙行动重点专项(KJXM-EEDS-2020005)
内蒙古自治区科技计划项目(2021GG0052)
内蒙古自治区科技重大专项(2021ZD0008)。
关键词
砒砂岩区
坡面产流产沙
土地利用方式
Pisha sandstone area
slope runoff and sediment yield
land use type
