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| DOI：10.13522/j.cnki.ggps.2017.11.017 |
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| Eco-environmental Demand for Water in Wetlands at Liaohe Estuary |
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ZHANG Wanshu , ZHOU Linfei, CHENG Qian
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College of Water Conservancy, Shenyang Agriculture University, Shenyang 110866, China
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| Abstract: |
| Determining the optimum and minimum eco-environmental demands for water in the wetland at Liaohe estuary is important to sustain ecosystem health and productivity. This paper established a wetland model by dividing eco-environmental demand for water into consumable and non-consumable water. The data needed in the model was obtained from satellite imagery using the 3S technology. We then applied the model to calculate the eco-environmental water requirement, sustainable eco-environmental water requirement, as well as minimum eco-environmental water requirement under different precipitations in 2000, 2005 and 2014 respectively. The results showed that the optimal eco-environment requirement was 99 554.92×104 m3. For 100%, 75% and 95% of the average annual rainfall, the minimum eco-environmental water requirements were 20 220.13×104 m3, 22 362.31×104 m3 and 24 314.98×104 m3 respectively. |
| Key words: Liaohe Estuary wetland; the optimum water requirement of eco-environmental; the minimum water requirement of eco-environmental |
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