Abstract
Abstract. Water plays a significant role in wetlands. Floodwater utilisation in wetlands brings a wide range of wetland services, from goods production and water regulation to animal protection and aesthetics related to water supply in wetlands. In this study, the floodwater utilisation values of wetland services were estimated within the Momoge wetland and Xianghai wetland in western Jilin province of northeastern China. From 2003 to 2008, the floodwater diverted from the Nenjiang and Tao'er River is 381 million m3, which translates into a monetary value of approximately 1.35 billion RMB in 2008 (RMB: Chinese Currency, RMB 6.80 = US$ 1), and the ratio of economic value, eco-environmental value, and social value is 1:12:2. Besides the monetary value of the water itself, excessive floodwater utilisation may bring losses to wetlands; the threshold floodwater utilisation volumes in wetlands are discussed. Floodwater utilisation can alleviate water shortages in wetlands, and the evaluation of floodwater utilisation in wetland services in monetary terms is a guide for the effective use of the floodwater resources and for the conservation of wetlands.
Highlights
Wetlands are considered the most biologically diverse of all the types of ecosystems, with the uniqueness characterised by its topography, how the water flows, the area’s large size and its variety of habitats (Daniel, 2000)
The quantification of wetland services enabled by floodwater utilisation can provide the link between wetland value and floodwater, which is advantageous for the sustainable development of wetlands
It is clear that the total floodwater utilisation values demonstrate the enormous benefit of wetland services
Summary
Wetlands are considered the most biologically diverse of all the types of ecosystems, with the uniqueness characterised by its topography, how the water flows, the area’s large size and its variety of habitats (Daniel, 2000). Many wetland properties, such as the wetlands’ living species, are dependent upon the quantity and quality of water. The wetland encompasses an area of 360 km and includes a water area of 124 km and a freshwater swamp area of 236 km2 These two wetlands are the National Nature Reserves and they are known for their unique scenery and abundant species, including the red-crown crane and swan. The wetlands are important for tourism and conservation as well as the gas regulation, flood mitigation and so on
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