The biomass and its allocation of a five years secondary forest which regenerated after slash and burn in Xishangbanna were estimated based on standard tree regression analysis (for tree )and clear cut method (for shr...The biomass and its allocation of a five years secondary forest which regenerated after slash and burn in Xishangbanna were estimated based on standard tree regression analysis (for tree )and clear cut method (for shrub? liana? herb and litter).The result shows that the total biomass was 40.6959 t·ha -1 , of which 30.37 t·ha -1 are contributed by tree layer; The biomass of shrub is 3.77 t·ha -1 ,and of the liana and herb are 0.55 t·ha -1 and 0.32 t·ha -1 ,respectively. The biomass of litterfall is 4.48 t·ha -1 ,dead standing tree is 0.21 t·ha -1 . The optimum regression models of different dominant plants and organs of the sample trees of tree layer in the stands were built.展开更多
The plant diversity and folk utilizable plants of swidden agroecosystems in Daka, Xishuangbanna were described in this paper. The result shows that species richness index differs from 2 to 9.5 in different subsystems ...The plant diversity and folk utilizable plants of swidden agroecosystems in Daka, Xishuangbanna were described in this paper. The result shows that species richness index differs from 2 to 9.5 in different subsystems of swidden agroecosystem. There are 79 kinds of folk utilizable plants of swidden agroecosystem that belong to 38 families and 64 genus. Correspondingly,most of them belong to Euphorbiaceae, Papilionaceae, Rubiaceae, Malvaceae and Compositae . At last a list of folk utilizable plants found in sampling plots is presented.展开更多
文摘The biomass and its allocation of a five years secondary forest which regenerated after slash and burn in Xishangbanna were estimated based on standard tree regression analysis (for tree )and clear cut method (for shrub? liana? herb and litter).The result shows that the total biomass was 40.6959 t·ha -1 , of which 30.37 t·ha -1 are contributed by tree layer; The biomass of shrub is 3.77 t·ha -1 ,and of the liana and herb are 0.55 t·ha -1 and 0.32 t·ha -1 ,respectively. The biomass of litterfall is 4.48 t·ha -1 ,dead standing tree is 0.21 t·ha -1 . The optimum regression models of different dominant plants and organs of the sample trees of tree layer in the stands were built.
文摘The plant diversity and folk utilizable plants of swidden agroecosystems in Daka, Xishuangbanna were described in this paper. The result shows that species richness index differs from 2 to 9.5 in different subsystems of swidden agroecosystem. There are 79 kinds of folk utilizable plants of swidden agroecosystem that belong to 38 families and 64 genus. Correspondingly,most of them belong to Euphorbiaceae, Papilionaceae, Rubiaceae, Malvaceae and Compositae . At last a list of folk utilizable plants found in sampling plots is presented.
