近30年来洞庭湖地区水稻种植面积演变的影响因素分析

米胜渊, 谭雪兰, 谭杰扬, 蒋凌霄, 王振凯

Analysis of influencing factors of rice planting area evolution in Dongting Lake Area during 1987-2017

MI Sheng-yuan, TAN Xue-lan, TAN Jie-yang, JIANG Ling-xiao, WANG Zhen-kai

表1 自变量对因变量的交互作用类型

Table 1 Types of interaction between two covariates

图示 判据 交互作用 q(x1∩x2)<min[q(x1), q(x2)] 非线性减弱 min[q(x1), q(x2)]<q(x1∩x2)<max[q(x1), q(x2)] 单因子非线性减弱 q(x1∩x2)>max[q(x1), q(x2)] 双因子增强 q(x1∩x2)=q(x1)+q(x2) 独立 q(x1∩x2)>q(x1)+q(x2) 非线性增强