Dry-matter production in a young Clerodendrum trichotomum plantation
2007
Ogawa, Y.(Kyoto Prefectural Univ. (Japan)) | Saito, H. | Kasuya, N.
We quantified dry matter production in a young Clerodendrum trichotomum plantation by destructively sampling the above-ground components of three individuals on 4 August 2003, and all 22 individuals within the study quadrat on 1-2 December 2003, in order to clarify the characteristics of matter production of shade-intolerant, deciduous scrubs occurring at the initial stage of plant succession. The age of the plantation after planting was 4 yr, and that of individuals, 7 to 10 yr. The study plantation was thought to be in the rapid growth stage, judging from the high shoot elongation rate (80 cm/yr). However, leaf biomass (247.7 g/square m) was low, because inflorescences with bisexual flowers were borne in large clusters at the shoot ends. The net above-ground production rate (738.9g/square m/yr) was half that of other young tree communities, because of the low leaf biomass of this deciduous shrub. The above-ground biomass density in December was 0.38kg/cubic m, and the maximum estimate adding leaf biomass in summer was 0.45 kg/cubic m. The low above-ground biomass density was a characteristic of C. trichotomum growing at the initial stage of plant succession.
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