摘要
农田防护林作为农林生态系统的重要组成部分,具有防止土壤风蚀,保护农田生态系统作用,也是保护区域农业安全生产的生态屏障。以黑龙江省克山县为研究区,结合野外调查数据,应用GIS对农田防护林防风效能进行空间评价。结果表明:摩擦衰减系数与相对风速具有一致的变化规律,相关系数为0.735(P<0.001),摩擦衰减系数作为相对风速的替代变量可以描述防护林的防风效能;借助于GIS强大的空间分析功能,结合野外调查数据,直观地反映了农田防护林的防风效能,以及不同位置关系农田防护林防风效能的空间变化特征。
As an important part of agroforestry ecosystem, windbreaks have the functions of preventing soil from wind erosion, protecting farmland ecosystem and protecting regional agricultural safety production. The Keshan County, Heilongjiang Province of China was selected to perform relevant experiments and field data measurements and the spatial efficiency evaluation of wind protection of windbreaks was evaluated by using the field survey data and GIS technology. The friction velocity reduction factor has a consistent changing trend with measured relative wind speed with the correlation coefficient of 0.735(P<0.001). The friction velocity reduction factor can be used as a substitution variable of the relative wind speed which was used to evaluate the efficiency of wind protection of windbreaks. With the powerful spatial analysis capacity of GIS and field survey data, the efficiency of wind protection of windbreaks was directly reflected and the spatial characteristics of the efficiency of wind protection of windbreaks in different locations were analyzed.
作者
杨曦光
李雨轩
于颖
范文义
Yang Xiguang;Li Yuxuan;Yu Ying;Fan Wenyi(Key Laboratory of Sustainable Forest Ecosystem Management,Ministry of Education,Northeast Forestry University,Harbin 150040,P.R.China)
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2022年第3期77-80,92,共5页
Journal of Northeast Forestry University
基金
国家自然科学基金项目(31971580,31870621)
中央高校基本科研业务费专项资金项目(2572019CP12,2572019BA10)。
关键词
GIS
空间分析
林带结构参数
防风效能
GIS
Spatial analysis
Structure parameter of forest
Efficiency of wind protection
作者简介
第一作者:杨曦光,男,1983年10月生,森林生态系统可持续经营教育部重点实验室(东北林业大学),副教授。E-mail:yangxiguang21@163.com;通信作者:范文义,森林生态系统可持续经营教育部重点实验室(东北林业大学),教授。E-mail:fanwy@163.com。
