Species Structure, Dry Matter Dynamics and Carbon Flux of a Dry Tropical Forest in India |
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Authors: | SINGH LALJI; SINGH J S |
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Institution: | Department of Botany, Banaras Hindu University Varanasi 221005, India |
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Abstract: | Species composition, plant biomass and net primary productivitywere studied on three sites of a dry tropical forest The forestwas characterized by small structure with 3810.4 m2 ha1tree and 3 17 8 m2 ha1 shrub basal cover Speciesdiversity was highest for the mid-slope site while the concentrationof dominance was greatest for the hill-top stand The beta diversitywas 3 1 Total standing crop of vegetation averaged 66 98 t ha1with 46 70 t ha1 in the tree layer, 13.97 t ha1in the shrub layer, 0.35 t ha1 in the herb layer, 2 83t ha1 in the litter layer and 3 13 t ha1 in fineroots Of the total annual litterfall (4 886.71 t ha1),69% was accounted for by leaves and 31% by non-leaf matter Netprimary production (NPP) ranged between 11 3 and 19 2 t ha1year1, to which the contributions of trees, shrubs andherbs averaged 72, 22 and 6%, respectively Contribution of rootsto NPP was substantial and ranged from 2 9 to 5 3 t ha1year1 A total of 83% of vegetation carbon was storedin the above-ground plant parts while the above-ground NPP wasresponsible for 72% of the total carbon input into the systemThe contribution of foliage, herbaceous vegetation and fineroots to carbon turnover was disproportionately larger comparedto their share in the total standing crop Carbon budgeting indicatedthat the forest was an accumulating system, over at least theshort term Dry tropical forest, biomass, litterfall, net primary production, carbon budget, carbon flux |
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