早春植物凋落物分解及养分归还

Early-spring Plants Litter Decompose and Nutrient Return

以吉林省吉林市磨盘山落叶阔叶林中早春植物为研究对象,对全叶延胡索(Corydalis repens)、多被银莲花(Anemone raddhotoma)、朝鲜顶冰花(Gagea lutea)进行野外分解试验,研究分解过程及其特点,探讨早春植物的养分循环规律。对落叶阔叶林中3种主要早春植物凋落物进行分解试验,朝鲜顶冰花的分解速率最快,为0.0348 g/(g·d);多被银莲花次之,为0.0240 g/(g·d);全叶延胡索最慢,分解速率为0.0230 g/(g·d)。朝鲜顶冰花分解最快,完全分解需要86 d;多被银莲花为124 d;分解最慢的是全叶延胡索,需要130 d。

Taking early-spring herbs of the deciduous broadleaf forest in the Mopan Mountain in Jilin City,Jilin Province as objects,such as Corydalis repens,Anemone raddhotoma,Gagea lutea,we studied the decomposition process and its characteristics to investigate nutrient cycling law about early-spring herbs.During litters decomposition experiments of three major early spring plants in the deciduous broadleaf forest,Gagea lutea’s rate of decomposition was the fastest,reaching 0.0348 g/(g·d),followed by Anemone raddhotoma,reaching 0.0240 g/(g·d),Corydalis repens was the slowest,only 0.0230 g/(g·d).The decomposition of the Gagea lutea was the fastest,and its complete decomposition required 86 days,Anemone raddhotoma required 124 days,Corydalis repens had the slowest decomposition,requiring 130 days.