Plant species composition, diversity and socio-economic benefits of homegarden agroforestry system in lemo district, haddiya zone of snnprs, Ethiopia

Abstract

Homegarden agroforestry is believed to be more diverse both in nature and socioeconomic benefits. The landholding size decreases as population density increases. The demand for wide range of goods and services of households are provided through planting a dozen of plant species in homegarden agroforestry. The objective of the study was to investigate plant Species composition, diversity and socioeconomic benefits of homegarden agroforestry in Lemo District, SNNPRS, Ethiopia. Multistage sampling techniques were employed to conduct the study. A total of 135 homegardens (83 from mid altitude and 52 from highland) were randomly selected for the study. Complete inventory of homegardens was conducted to assess every plant species in the homegarden. Socioeconomic data were collected through household interview. A total of 80 plant species representing 45 families were recorded in the homegarden in the study area. In comparison more plant species and richness were recorded in homegarden found in mid altitude. Seventy seven plant species were recorded in homegardens found in mid altitude compared to 57 plant species in the homegarden found in the highland. The difference was statistically significant (P=0.026). However, the growth habits of plants species (trees and herbs) found in homegardens were not statistically significant difference (p>0.05) except shrubs. The socioeconomic benefit results show that13 major plants use categories were identified in both altitudes. The mean annual income from the homegarden was 3,103.60Birr in mid altitude and 1,974.67 Birr in the highland. The difference was statistically significant (p<0.05). Homegarden agroforestry is one form of land use practice in the study area. Although the nature of homegardens in mid altitude and highland is more or less similar, there is a difference in terms of the socioeconomic benefits of the homegarden. Attention should be given to the existing homegarden agroforestry practices to promote homegarden agroforestry to enhance biodiversity conservation and improve its socioeconomic benefits.