锥栗人工林生物量与生产力的研究 Ⅰ.生物量的研究

Studies of the Biomass and Productivity Pattern of Castanea henryi Plantation Ⅰ. Studies of Biomass

以福建省建瓯市 3～ 10年生锥栗人工林为对象 ,研究了锥栗 Castanea henryi人工林在未结果期、结果初期和盛果初期 3个不同的发育时期的生物量 .结果表明 :随着林分生长年龄的增大 ,生物量呈明显积累 ,分别为 2 .742 7t/hm2 ,8.2 0 64 t/hm2和3 3 .780 1t/hm2 ;随着锥栗生长发育年龄的增加 ,地上部分所占的生物量比例也增大 ;根系主要分布在距地表 60 cm内的土层中 ,侧根发达 ,主根随发育年龄提高逐渐向下生长 ,可深达 1.

The biomass of Castanea henryi plantation is different in its three growth stages. With the growth of stand and increase of age, the biomass gradually accumulates and the production reaches to 2.742 7 t/hm 2,8.206 4 t/hm 2 and 33.780 1 t/hm 2 respectively for the three stages. The percentage of above ground biomass increases with the stand age. Roots are distributed within 60 cm underground soil layer, lateral roots fully develop and main roots grow down to 1.6 m underground.