DYNAMICS OF LEAF AREA INDEX AND CANOPY OPENNESS FOR THREE FOREST COMMUNITIES IN THE WARM TEMPERATE ZONE OF CHINA ACCLIMATION OF CATHAYA ARGYROPHYLLA TO LIGHT ACROSS Regeneration Characteristics of Pinus yunnanensis in Gaps on the Mountainous Area in Southwestern Sichuan Province, China Canopy structural parameters and understory light regimes of 3 artificial forest stands in South China Seasonal variation of photosynthetic pigment content in Pinus koraiensis:the role of different light-induced strategies Effects of Canopy Openness on Positioning Availability and Initialization Time of GNSS RTK in Forests Spatial Heterogeneity Dynamics of Canopy Structure in a Montane Evergreen Broadleaved Forest Following a Natural Disturbance in North Guangdong