摘要
文章以辽宁省大凌河流域某试验区为研究对象,通过对野外152个调查单元进行实地分层抽样调查,并在分析了垄向坡度和坡度因子计算公式的基础上,分别利用Excel、Arc MAP和SPSS软件对室内数据进行统计分析。研究表明:山区、低山丘陵区和平原区的地面坡度平均值分别为8.25°、6.16°和4.86°,垄向坡度分别为6.45°、4.50°和1.31°,平原区垄向坡度平均值最小为丘陵区的29.1%,为山区的20.2%;丘陵区居中为山区的69.4%,山区最大;文章的研究成果,揭示了辽宁省不同地形垄作方式的空间结构分布规律及其对水土保持效益的价值意义,可为采取关键性水土流失治理措施提供决策依据和理论支持。
In this paper, taking a test area in the Daling river basin in Liaoning Province as the object researched, field stratified sampling survey was conducted in 152 survey units, based on the analysis of the ridge slope and slope factor calculation formula, Excel, ArcMAP and SPSS software were used respectively to conduct the statistical analysis. It appears that： the mean values of mountainous area, hilly area and plain area ground slope are respectively 8.25°, 6.16°and 4.86° , the ridge slope is respectively 6.45°,4.50° and 1.31°, the ridge slope mean value of plain area, minimum value is in hilly area, 29.1%, accounts for 20.2% of the mountainous area, second is in the hilly area, accounts for 69.4% of the mountainous area, the biggest is in mountainous area. This study presents the spatial distribution law of different terrain ridge modes in Liaoning Province, and the meaning for benefits from soil and water conservation, may be taken as the decision accordance and theoretical support to adopt control measures against soil and water erosion.
作者
刘强
LIU Qiang(Chaoyang County Quality Supervision Station of Water Affairs Bureau,Chaoyang 122000,China)
出处
《黑龙江水利科技》
2018年第6期193-197,共5页
Heilongjiang Hydraulic Science and Technology
关键词
大凌河流域
垄向坡度
水土保持效益
土壤侵蚀
Daling river
ridge slope
benefits of soil and water conservation
soil erosion
