摘要
研究不同土地利用类型下土壤入渗及其影响因素,有助于城市土地利用管理及径流调节。以快速城市化的兰州新区6种土地利用类型为例,利用圆盘入渗仪,对土壤水分入渗过程进行了实地测量,并利用主成分分析对影响因素进行研究。结果表明:城市化过程中土地利用变化使土壤砂粒和容重增加,总孔隙度和饱和含水量降低;待建地和人工林地的土壤入渗参数值均低于其他土地利用类型。土壤入渗率与有机质含量、总孔隙度、饱和含水量、粉粒含量正相关,与容重和砂粒、黏粒含量负相关。城市化过程中土地利用类型向待建地的转变改变了土壤理化性质及土壤水分入渗能力。
Studying on soil infiltration and its influence factors in different land use types are beneficial to urban runoff regulation and land management. This research selected six land use types(e. g. natural forest,artificial forest,natural grassland,land to be constructed,cropland,abandoned land)and observed the process of soil infiltration using disc permeameter. Correlation analysis and principal component analysis were used to establish the relationship between soil infiltration and soil properties. The results showed that land use change could increase soil bulk density and sand content,while decrease total porosity and soil saturated water content during urbanization. The parameters of soil infiltration of land to be constructed and artificial forest were significant lower than those of the other land use types. Soil infiltration was positively correlated with soil organic matter,total porosity,soil saturated water content and silt content,while negatively correlated with soil bulk density,sand and clay content. The shift of the other land use types to constructed land and building area had altered soil physicochemical properties and affected soil infiltration.
作者
张润霞
赵学勇
李晶
吕文强
柴媛媛
岳红琴
Zhang Runxia;Zhao Xueyong;Li Jing;Lv Wenqiang;Chai Yuanyuan;Yue Hongqing(Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China;Gansu Institute of Soil and Water Conservation Science,Lanzhou 730000,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《中国沙漠》
CSCD
北大核心
2020年第4期146-153,共8页
Journal of Desert Research
基金
甘肃省青年科技基金项目(18JR3RA027)
甘肃省水利厅水资源费项目(甘水资源发[2017]293号,[2018]225号-2)
甘肃省水利厅水利科学试验研究及技术推广计划项目(甘水科外发[2016]76号-12,[2018]70号-27,甘水建管发[2020]46号)。
关键词
快速城市化
兰州新区
土壤入渗
干旱荒漠区
rapid urbanization
Lanzhou New District
soil infiltration
arid desert area
