《Table 2 The biomasses and distribution of T.flousiana plantation and successive rotation plantation

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《Biomass Productivity of Taiwania flousiana Plantation and Successive Rotation Plantation of Cunninghamia lanceolata in Cutover Forest Land of C. Lanceolata》

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t/hm2

As shown in Table 2，the stand biomass was 206.82 t/hm2and 146.13 t/hm2，respectively for the 23-year-old T.flousiana plantation and successive rotation plantation of C.lanceolata.The biomasses for the arborous layers of the 2 types of plantations were195.21 and 136.32 t/hm2，respectively，accounting for 94.39%and 93.29%of the stand biomasses；the biomasses for the shrub layers were 4.57 and 5.14 t/hm2，which accounted for 2.41%and 3.52%，respectively；the biomasses of the litter layers were7.04 and 4.67 t/hm2，respectively，accounting for 3.40%and3.20%.As for the distribution of biomass in the arborous layer of the T.flousiana plantation，the stem（economic）biomass was118.32 t/hm2，which was 1.35 times of that of successive rotation plantation of C.lanceolata；the canopy（leaves+branches）biomass was 44.51 t/hm2，which was 2.5 times of that of successive rotation plantation of C.lanceolata；the root biomass was24.88 t/hm2，which was 1.6 times of that of successive rotation plantation of C.lanceolata；only the bark biomass（7.50 t/hm2）was slightly less than that of successive rotation plantation of C.lanceolata（9.56 t/hm2）.