Ecological characteristics of homegarden agroforestry system in Amphoe Muang, Changwat Nonthaburi
1994
Prapan Sampanpanish | Monton Jamroenpruksa (Kasetsart Univ., Bangkok (Thailand). Faculty of Forestry)
Study on "Ecological Characteristics of Homegarden Agroforestry System" was carried out at Amphoe Muang, Changwat Nonthaburi from December 1992 to November 1993. The study was classified into three aspects, namely, structural characteristic of the plant community, litterfall production and decomposition rate of litter. In addition, soil samples were also collected to analyse its fertility. The area of homegarden was about 4.31 rai (0.69 ha). The plant community consisted mainly of fruit trees with the density of 6,877 trees/hectare, totally 58 species. The trees were ranging from 10.51-15.5 cm, in DBH and 7.00-13.50 m. in height. The continuous canopy was divided into four layers. In terms of ecological aspect, Durio zibethinus and Erythrina subumbrans were dominant with I.V.I about 56 percent and 53 percent respectively, followed by Areca catechu, Cocos nudiflora, Eugenia malaccensis and so on. The Shannon-Wiener index was 4.0 as nearly as some mixed deciduous and dry evergreen forests. The annual litterfall production was about 5.682 ton/hectare/year which could be converted to amount of Ca, N, K, Mg, and P return to the soils about 106.883, 81.923, 75.083, 26.324 and 8.042 kg/hectare/year. The decomposition rate of litter was about 2.036 ton/hectare/year.
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