Dr. P.B.Dharmasena

sri lanka sinhala environment agriculture climate change water resources management ecosystem irrigation traditional knowledge water management climate poverty tank cascades sustainability indigenous knowledge soil research participatory approach rural development water quality english research selection criteria drought climate smart agriculture ecosystems ancient practices flood land degradation watershed ecology ghg emission water productivity soil conservation carbon sequestration ecosystem services biodiversity rainwater harvesting heritage tank cascade systems ecosystem restoration green revolution planning sustainable development archaeology sustainable land management agro-ecology development project history cropping system agriculture rainwater weather disaster major irrigation governance water resources policy indigenous water pollution spiritual poverty landscape soil erosion agriculture slm development rural appraisal productivity green house gases natural disasters agro-forestry human health partnership approach land use cascade ecology carbon net zero climate variability climate change mitigation climate change adaptation food security proposal writing budget biomimicry water balance desirable farming ancient agriculture river basin cropping pattern soil series major soil types archaeological evidence groundwater participation water policy mahaweli institutions farmer organization home based employment plant nurseries reselling model artificial intelligence plantation tank-village certified seed agronomic practices natural ecosystem agro-ecosystem literature objective methodology data resilience resources food forest gardens unresolved mysteries stargate land use planning water resources planning watyer pollution waste water health ecosystems environmental impact assessment landslide cyclone database rituals civilization culture engineering india adaptability livestock management paddy farming food chain food web nutrient cycles energy flow home garden interaction human colonization project climate mapping community agro-ecosytem system efficiency urban planning population history of agriculture training