摘要
根据大量的样地材料，从宏观上阐明了杉木林生物生产力的地理分布格局和水热相关规律，建立的生产力地理分布模型客观地反映了杉木高产林区的地理分布规律。根据限制因子作用律建立了杉木林生物生产力水热优化模型，模型显示杉木林生长最适宜的水热组合环境为：年均气温１６～１７℃，年降水量１７００～１９００ｍｍ，温暖指数１４５～１５０℃月，潜在蒸散量９２０～９３０ｍｍ，这时杉木林乔木层的生产力达１７～１８ｔｈｍ－２ａ－１，全林生产力达２１～２２ｔｈｍ－２ａ－１。
According to a lot of plot data,the productivity distribution patterns of Chinesefir plantations related to geographical or hydrothermal factors were clearly indicated.The geographical distribution model established here objectively reflects the geographical patterns of the highyield Chinesefir plantations.In terms of the ecological limitation rule,the optimal models of Chinesefir productivity vs.hydrothermal factors were set up, showing that the hydrothermal factors,which are most suitable for Chinesefir growth,are as follows:annual mean airtemperature 16～17℃,annual precipitation 1700～1900mm,warm index 145~150℃ month,Thornwaite's potential evapotranspiration 920~930mm.Under the climate conditions,the productivity of Chinesefir plantations can be up to 17~18t·hm-2·a-1 for arbor layer and 21～22t·hm-2·a-1 for the whole forest.
出处
《植物生态学报》
CAS
CSCD
北大核心
1997年第5期403-415,共13页
Chinese Journal of Plant Ecology
基金
国家科委"八五"攻关课题
关键词
杉木
生物生产力
格局
数学模型
Productivity,Distribution Pattern,Mathematical model
