论文部分内容阅读
系统研究了杉木、火力楠纯林及混交林细根生物量、生产力及年周转率．结果表明，杉木、火力楠纯林及混交林活细根生物量分别为８８０、３０３５和１５６０ｋｇ·ｈａ－１；死细根生物量为２３５、３９８和５６５ｋｇ·ｈａ－１；细根年周转率为１．２９、１．４２和１．４０；年生产量为１１３７、４３１８和２１７９ｈａ·ｈａ－１，年死亡量为４９７、５９５和１１４９ｋｇ·ｈａ－１，分别相当于林分枯枝落叶年凋落量的３６．８、２１．６和６５．９％．可见混交林比纯林更具较高生产力和良好的生态协调性．
The fine root biomass, productivity and annual turnover rate of Cunninghamia lanceolata, P. furnacalis and mixed forest were systematically studied. The results showed that the fine root biomass of Cunninghamia lanceolata plantation, pure stands and mixed forest were 880, 3035 and 1560 kg · ha-1 respectively; the fine root biomass was 235, 398 and 565 kg · ha-1; 1.29, 1.42 and 1.40 respectively. The annual production was 1137, 4318 and 2179 ha ha -1, with the annual mortality of 497, 595 and 1149 kg ha-1, respectively, which were equivalent to litterfall litter The amount of 36.8, 21.6 and 65.9%. Can be seen mixed forest more pure than pure forest productivity and good ecological coordination.