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- Title
Evaluation of Water Quality and Vegetable Production in Cheung Ek Lake, Cambodia.
- Authors
OUM SOMARA; MACHITO MIHARA
- Abstract
Wastewater management in Phnom Penh is always a concern for the Royal Government of Cambodia as well as citizens of the capital. All wastewater and sewage from the households and the industries are untreated discharges into the city's wetlands, such as Cheung Ek, Tompun, Trabek Lakes. Cheung Ek Lake is the biggest and terminal lake in the chain of water systems before discharging into Bassac and Mekong River. Apart from the purification of the wastewater, the lake ecosystem also has an important economic function. Local people use the lake for fishing and to cultivate aquatic plants such as water morning glory (Ipomoea aquatica) and water mimosa (Neptunia oleracea). Considering these aspects, the objectives of this study are to (i) analyze water quality in Cheung Ek Lake during the rainy season; (ii) study the economic balance and the price-chain of water morning glory production. The water samples were collected on three different days at three points in the lake (inlet, middle and outlet) and analyzed for pH, EC, Fe, DO, PO43- and NO3-. Semistructured questionnaires were designed for the economic analysis, and a total of 20 farmers were interviewed for social characteristics, input and output costs, and the water morning glory market channel of water morning glory production. Except for phosphate concentrations which was higher at the inlet site, the other nutrient content poses no threat to environmental pollution. Additionally, the lake's chemical load were lower at the outlet than at the inlet. In terms of economic benefit, the net profit from the production was 23.77 USD per day/ha. Despite the fact that the farmers spent a lot of money on hiring the manpower, the profits from the sale was sufficient. The production's economic efficiency was 1.80. The result of water quality and economic showed lake perform a role in removing pollutants and provide economic benefits to the farmers.
- Subjects
PHNOM Penh (Cambodia); CAMBODIA; WATER quality; VEGETABLE quality; ENDORHEIC lakes; SEWAGE purification; ECONOMIC efficiency; COMBINED sewer overflows; LAKES
- Publication
International Journal of Environmental & Rural Development, 2021, Vol 12, Issue 2, p194
- ISSN
2185-159X
- Publication type
Article