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Session 2.2 homegarden agroforestry for sustainability in sri lanka
This document discusses homegarden agroforestry in Sri Lanka and its importance for socio-economic, ecological, and environmental sustainability. It finds that homegardens cover around 14% of Sri Lanka's land area and contain a high diversity of plant species, including over 2300 endemic species. Homegardens are a major source of fruit production, genetic diversity for fruit trees, and carbon sequestration. They also provide food and nutritional security for farmers while sustainably managing landscapes and environmental services. However, homegardens are facing issues like fragmentation and a lack of domestication of high-value tree species that could be addressed through innovative management strategies and a multidisciplinary policy approach.
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Session 2.2 homegarden agroforestry for sustainability in sri lanka
- 1. Homegarden Agroforestry for Socio-Economic,Ecological and Environmental Sustainability in Sri Lanka DKNG Pushpakumara, B. Marambe, J. Weerahewa, G.L.L.P. Silva, K.T. Premakantha and B.V.R. Punyawardena Faculty of Agriculture, University of Peradeniya, Sri Lanka, Forest Department, Battaramulla, Sri Lanka Department of Agriculture, Peradeniya, Sri Lanka
- 2. Source: Pushpakumara etal. (2012) Area of Homegardens in Sri Lanka in Relation to Forests, Agriculture and Other Landuses
- 3. Sri Lanka Population pressure Forest- protected Land is limiting factor Land degradation Watershed issues Food and nutritional security Poor farmers – food & nutrition problem
- 4. 13% 6% 10% 41%21% 9% Homegardens Rubber plantations Coconut plantations Forestplantations Imported Unrecorded Sources of sawlogs supply in Sri Lanka Source: FSMP, 1995; Pushpakumara et al. 2012 7% 27%4% 19% 3% 14% 7% 19% Rubber w ood Homegarden Forest plantation Coconut Processing residues Other Natural forest Crop land Sources of fuelwood supply in Sri Lanka Sawlog and Fuelwood Production
- 5. Household income Biodiversity conservation Weerahewaet al. 2012; 2013
- 6. Diversity of thePlant Species (Numbers) 2300 Endemic species 20201632Families 34262451Genera 36 (23%) 28 (18%) 25 (16%) 65 (42%) Species No specific use identified MedicinalTimberFood Marambe et al., 2012; Weerahewa et al. 2012; 2013
- 7. Species Number oftrees recorded from homegardens Coconut 38,616,649 ?? Jakfruit 10,437,142 Mahogany 6,410,248 Mango 5,607,688 Teak 3,293,609 Rambutan 1,177,920 Avacardo 986,161 Woodapple 948,752 Del 910,473 Delum 197,941 Ebony 174 005 Beli 165,718 Palmyrah 127,340 Nelli 116,728 Mango 52,103 Source: Ariyadasa (2002) Tree Domestication Major source of fruit production and fruit tree genetic diversity Circa situm conservation
- 8. Food and nutritionalsecurity
- 9. Sustainable Management ofLandscape and Provision of Environmental Services
- 10. District Area (sq km) Population density (per sq km) Forest cover(%) Homegarden cover (%)* Tree canopy cover (%) Ampara 4,318 143 37.5 4.1 41.6 Colombo 656 3,631 2.8 13.1 15.9 Gampaha 1,386 1,523 0.3 25.2 25.5 Hambantota 2,579 210 20.5 15.1 35.6 Kandy 1,906 704 17.0 30.4 47.4 Kegalle 1,693 468 9.5 23.2 32.7 Nuwara Eliya 1,720 423 24.5 5.3 29.8 Rathnapura 3,255 325 20.0 15.8 35.8 Vavunia 1,967 74 51.0 10.1 61.1 Sri Lanka 65,610 314 23.5 14.3 40.8 Statistics on land area, population density, forest cover and homegarden area of selected districts of Sri Lanka. Pushpakumara et al., 2012
- 12. Carbon Content inDifferent TROF systems of Nuwara Eliya District TROF system Extent Weight at 20% M.C. Carbon content (kg) Homegarden 27,440 1,655,528,757 711,875,713.2 Tea based TROF system 79,182 989,007,345 441,097,275.7 Urban agricultural based TROF system 3,885 77,924,882 34,754,497.42 Grassland 4,289 41,101,104 18,331,092.44 Annual crop based TROF system 13,154 4,383,012 1,954,823.516 Total 127950 2,767,945,100 1,208,013,402
- 13. Homegardens are climateresilient
- 14. Now…. Priority in nationaldevelopment programs (Divi Neguma – Livelihood improvement programs). Largely based on annual vegetables and few perennials….
- 15.
- 16. Fragmentation issue….. Domestication ofhigh value trees…… Perceptions and convictions…… Innovative management strategies….. Dynamism of tree component…… Multi-disciplinary system approach…
- 17.
- 19. Thank you foryour attention..........