河南省冬小麦种植频率时空变化及影响因素分析
李方杰,任建强(
),吴尚蓉,陈仲新,张宁丹
),吴尚蓉,陈仲新,张宁丹
Spatio-Temporal Variations of Winter Wheat Planting Frequency and Their Analysis of Influencing Factors in Henan Province
FangJie LI,JianQiang REN(),ShangRong WU,ZhongXin CHEN,NingDan ZHANG
),ShangRong WU,ZhongXin CHEN,NingDan ZHANG
图9. 河南省不同时期冬小麦种植频率变化空间分布图
（a）第二阶段与第一阶段间冬小麦种植频率变化;（b）第三阶段与第二阶段间冬小麦种植频率变化
Fig. 9. Variation distribution of WWPF in different periods in Henan province
(a)Variation of WWPF between the second period and the first period; (b)Variation of WWPF between the third period and the second period
