Abstract: By using moving split-window techniques (MSWT) and based on the estimation of microclimate in dry and rainy seasons, this paper analyzed the seasonal variation of microclimate’s edge influence depth at the interface of farmland and forest ecotone in west Jilin Province, aimed to provide information for improving current management practice and production in the study area. The results showed that in forestland, the squared Euclidean distance (SED) curve on the moving split-window graph had a stable variation, with a peak at 40 m in dry season and at 20 m in rainy season; while in farmland, the microclimate’s edge influence depth had no obvious spatiotemporal change, with the peak of SED curve at 60 m in both dry and rainy seasons. The edge influence depth was more far in farmland than in forestland, and there was a seasonal variation in forestland. It was suggested that the microclimate’s edge influence depth at the interface of farmland and forest ecotone in west Jilin varied with time and space, and depended on the vegetation’s aspection at the two sides of the interface and the intensity of human disturbance.

Key words: NDVI, Precipitation, Temperature, Wave-type time series, Simulation