Ecological Water Conservation Method of Island Wetland

A wetland and island technology, applied in chemical instruments and methods, biological water/sewage treatment, sustainable biological treatment, etc., can solve problems such as inability to provide enough water for wetland ecosystems, failure to achieve water conservation goals, and decline in water storage capacity. Achieve the effect of increasing the number of consumers, reducing heating, and increasing water storage capacity

Active Publication Date: 2018-08-24
GUANGXI MANGROVE RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The abandoned farmland on the island has been degraded into a swamp due to unmanaged management, and some intermittent streams have also silted up and narrowed, reducing their water storage capacity
The result of island wetland degradation is that a large amount of freshwater flows into the sea during the rainy season, and cannot provide the amount of water required for the stability of the wetland ecosystem during the dry season.
In order to solve the problem of insufficient fresh water resources on the island, someone once built a reservoir on the island and hardened many ponds and ditches. Achieve water retention goals

Method used

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  • Ecological Water Conservation Method of Island Wetland
  • Ecological Water Conservation Method of Island Wetland
  • Ecological Water Conservation Method of Island Wetland

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1: Weizhou Island Niujiaokeng Wetland

[0041] like Figure 1-3 As shown, with reference to the island wetland ecological water conservation method provided by the present invention, the Niujiaokeng wetland on Weizhou Island is restored, and the specific steps are:

[0042] Step 1. Build a water retention dam at the downstream mouth of the naturally formed runoff ditch in the Niujiaokeng Wetland. The length of the water retention dam is 1m, the height is 1m, and the thickness is 50cm. The top of the water retention dam is provided with 2 A sunken water outlet, the water outlet is in the shape of a cuboid with a length of 30 cm, a height of 15 cm, and an interval of 15 cm;

[0043] Step 2, take the dam as the starting point to repair the 1518m long described runoff ditch upwards, clean up the silt in the runoff ditch and heighten the ditch embankment, so that the width of the runoff ditch reaches 0.8m, and the depth reaches 0.7m (water storage capacity 850m 3 )...

Embodiment 2

[0053] Example 2: Weizhou Island Kengzixi Wetland

[0054] like figure 1 , 2 , 4, with reference to the island wetland ecological water conservation method provided by the present invention, the Kengzixi Wetland of Weizhou Island is repaired, and the specific steps are:

[0055] Step 1, build a water retention dam at the downstream ditch mouth of the naturally formed runoff ditch in the Kengzixi Wetland. The length of the water retention dam is 6m, the height is 1m, and the thickness is 80cm. The top of the water retention dam is provided with 5 A sunken water outlet, described water outlet is rectangular parallelepiped, and its length is 60cm, and height is 30cm, and interval distance is 30cm, builds a shallow pool outside the dam, builds juvenile fish habitat environment, described runoff inside the dam. The downstream of the ditch builds a reservoir, the depth of the reservoir is 2m, the angle between the bottom of the reservoir and the side wall is 120 °, the bottom of t...

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Abstract

The invention discloses an ecological water conservation method for a sea island wet land. The ecological water conservation method comprises the following steps that I, a water conservation dam is built at a downstream ditch opening of a runoff ditch, and a plurality of concave drain openings are formed in the top of the water conservation damp at intervals; II, the runoff ditch is trimmed, a plurality of reservoirs are excavated in the positions, located at the two sides of the runoff ditch, of the wet land, the reservoirs communicate with the runoff ditch through connecting ditches, and the reservoirs communicate with one another through connecting ditches; III, aquatic plants are planted on the surface of open water in the runoff ditch, the reservoirs and the connecting ditches, the coverage of the aquatic plants reaches 60-80%, terrestrial salt-tolerant plants are planted on the surfaces of side slopes and waterlogging slopes of the sea island wet land, and the canopy density of the terrestrial salt-tolerant plants reaches 0.8 or above; and IV, aquatic organisms are put into the reservoirs. According to the ecological water conservation method, the water storage of the sea island wet land increases by 2-8 times, the runoff is retained by 9-37%, the evaporation consumption of the water storage is reduced by 47%, and the waste of fresh water resources is greatly reduced.

Description

technical field [0001] The invention relates to the field of wetland water retention. More specifically, the present invention relates to a method for ecological water conservation in sea island wetlands. Background technique [0002] my country has an area of ​​500m 2 There are more than 6,500 islands above, most of which are less than 99km in area 2 The lack of fresh water resources not only makes the terrestrial ecosystems of these islands extremely fragile, but also seriously affects their development and utilization. Precipitation is the only way for islands to obtain natural fresh water. However, due to the small area of ​​accumulated water, the poor water retention capacity of surface vegetation and soil, most of the rainwater flows into the sea in the form of runoff during precipitation, resulting in extremely undeveloped freshwater wetlands on islands and low biodiversity. , the ecological carrying capacity is small. [0003] Taking Weizhou Island, the largest v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B3/02C02F3/32
CPCC02F3/32E02B3/02Y02W10/10
Inventor 莫竹承庞万伟李丽凤潘良浩范航清
Owner GUANGXI MANGROVE RES CENT
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