CN105155460A - Method for repairing reservoir hydro-fluctuation belt through panicum repens - Google Patents

Abstract

In a method for repairing a reservoir hydro-fluctuation belt through panicum repens, panicum repens is selected as repair plants for repairing the reservoir hydro-fluctuation belt. According to the planting method for the panicum repens, soil is fixed through pebbles or stone after direct planting, or soil is fixed through pebbles or stone after sandbag open planting. By means of the method, soil and water can be preserved, water sources are conserved, the environment is beautified, and great environmental, social and economical benefits are achieved.

Description

Panicum repens repairs the method for reservoir drawdown band

[technical field]

The present invention relates to ecological environmental protection and Treatment process field, particularly Panicum repens repairs the method for reservoir drawdown band.

[background technology]

Falling zone is river, lake, the distinctive a kind of phenomenon of reservoir, refers to the region of rising that disappears formed between maximum water level and lowest water level line that reservoir rises because seasonal water level disappears, periodicity retaining and ecological water scheduling etc. cause.Falling zone is naked state, wash in a pan erosion by rainwater erosion and wave to act on, the soil body is peeled off layer by layer, severe water and soil erosion, even there is avalanche, cause reservoir sediment accumulation, overcome the above problems just must find resistance toly to flood drought-enduring, winter in summer, the amphibious plant of antiscour, try every possible means admittedly to live a certain amount of soil again and take root growth for plant, the vegetation recovery of reservoir drawdown band is still world-famous puzzle so far.

[summary of the invention]

The object of the invention is to overcome the deficiencies in the prior art, provide a kind of method that Panicum repens repairs reservoir drawdown band, can conserve water and soil by the method, water conservation, to beautify the environment, there is higher environment, Social and economic benef@.

For solving the problems of the technologies described above, present invention employs following technical proposals:

Panicum repens repairs the method for reservoir drawdown band, chooses Panicum repens as the rehabilitation plant repairing reservoir drawdown band, and the method for planting of described Panicum repens is with cobble or the solid soil of stone after directly planting, or with cobble or the solid soil of stone after the plantation of sandbag opening.

Preferably, plantation is adopted with the following method:

Under block stone ring border, build the cofferdam that meets water and do the process of wave resistance brush, silt sediment, piles up gabion, in gabion, fill out finger stone, fixing plant, places block stone fix for strain root of newly planting;

Under gravel environment, pile up gabion, in gabion, fill out finger stone, fixing plant;

At alluvial earth, loam, under sandstone environment, select iron wire grid, and with the reinforcing of staple corner, at the in-built earth of snakeskin bag, loam or sandstone, pile up layer by layer, to plant plant in the upper shed of snakeskin bag.

Compared with prior art, the invention has the beneficial effects as follows:

1, the rehabilitation plant Panicum repens chosen due to the present invention has excellent amphibious characteristic, Panicum repens is for a long time at drought raw land well-grown, shallowly flooding, partly flood even normal close to growth when entirely flooding, still can survive after entirely flooding 3-4 month water-break, it is resistance to floods, drought-enduring, resistance to lean, and soil and water conservation effect is obvious, is the herbaceous plant adapted to the most reservoir water fluctuation belt habitat found up to now.

2, the present invention reaches the object reducing soil erosion, repair falling zone ecological environment, beautify view in the engineering of repairing reservoir drawdown band, has higher environmental benefit, Social benefit and economic benefit.

[specific embodiment]

In order to make object of the present invention, technical scheme and advantage clearly understand, below embodiment the present invention is described further.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.

After Heyuan City's Xinfengjiang Reservoir retaining, the following slope vegetation of water storage level is withered away gradually, falling zone is naked state, wash in a pan erosion by rainwater erosion and wave to act on, the soil body is peeled off layer by layer, severe water and soil erosion, even there is avalanche, cause reservoir sediment accumulation, not only destroy two sides view, ecosystem problem is also very outstanding.

Guangdong red sun energy-conserving and environment-protective Science and Technology Ltd. on this emphasis travelling route, moon in water gulf at Heyuan City's Xinfengjiang Reservoir ten thousand green lake harbour, to disappear the storehouse bank of the rhythm and pace of moving things and the swelling and subsiding zone discrepancy in elevation of rising according to different water level, does slope vegetation protection test with Panicum repens.

Panicum repens is grass family Panicum herbaceos perennial, and originate in Brazil, be now widely distributed in the torrid zone and subtropical zone, there is distribution in China south China, East China, are grown on waterside, seashore or moist part more, also often invade nonirrigated farmland.

The present invention chooses Panicum repens as the rehabilitation plant repairing reservoir drawdown band, admittedly lives a certain amount of soil take root growth for plant by following two kinds of methods: cobble or the solid soil of stone after 1, directly planting, 2, after the plantation of sandbag opening with cobble or stone solid native.

Control measures under varying environment is:

1. block stone ring border

Build the cofferdam that meets water and do the process of wave resistance brush, silt sediment, piles up gabion, in gabion, fill out finger stone, fixing plant, places block stone fix for strain root of newly planting;

2. gravel environment

Pile up gabion, in gabion, fill out finger stone, fixing plant;

3. deposit earth, loam, sandstone environment

Select iron wire grid, and with the reinforcing of staple corner, at the in-built earth of snakeskin bag, loam or sandstone, pile up layer by layer, to plant plant in the upper shed of snakeskin bag.

Experiment shows, Panicum repens starts to turn green after planting 3-5 days, and sprouting after 7-11 days, young leaves growing way are vigorous, and after planting, 2-3 week coverage scale reaches 40%-50%, reaches 100% covering after 40 days.Subsequently, by simulated test, study the impact of different Submergence time on superoxide dismutase, catalase, peroxidase and polyphenol oxidase activity in Panicum repens body.In flooding stress in earlier stage, in Panicum repens body, superoxide dismutase, catalase and polyphenol oxidase activity aggregate performance are the variation characteristic raised.Afterwards, along with the prolongation of stress time, 3 kinds of enzymatic activitys reduce all gradually, and when waterflooding, superoxide dismutase, catalase and polyphenol oxidase activity are respectively 38.7%, 50.3% and 178.2% of contrast.During whole waterflooding, peroxidase activity is then always in the trend raised.So the responding ability of several protective enzyme to flooding stress is variant, wherein the change of superoxide dismutase, catalase activity can be used as the physical signs that Panicum repens reacts waterflooding.

Result shows, Panicum repens is for a long time at drought raw land well-grown, shallowly flooding, partly flood even normal close to growth when entirely flooding, still can survive after entirely flooding 3-4 month water-break, its root system is sturdy, floor file and going, netted development, has excellent water and soil conservation function, and grass is by vigorous emerald green, neat and consistent, can form good landscape effect.Panicum repens is resistance to be flooded, drought-enduring, resistance to lean, and soil and water conservation effect is obvious, is the herbaceous plant adapted to the most reservoir water fluctuation belt habitat found up to now.

For guaranteeing that repairing effect strengthens maintenance management, during planting rear 1-2, on the hot summer days, drought-resistant water-preserving is carried out to plant, after flood or after the flood discharge of reservoir area, remove residual pollutant and floating thing, in time after-culture is carried out, timely prevention and elimination of disease and pests to plant that is dead and avalanche location.

Through above-mentioned reinstatement works, the soil erosion problem of this reservoir drawdown band obtains effective control, reservoir surrounding enviroment obtain beautifies, improve urban area circumstance, facilitate tourism development, create good investment environment simultaneously, there are good social benefit and ecological benefits, especially for the improvement of falling zone, city, view reparation supply a pattern and reference.

Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.

Claims (2)

1. Panicum repens repairs the method for reservoir drawdown band, it is characterized in that, choose Panicum repens as the rehabilitation plant repairing reservoir drawdown band, the method for planting of described Panicum repens is with cobble or the solid soil of stone after directly planting, or with cobble or the solid soil of stone after the plantation of sandbag opening.

2. Panicum repens according to claim 1 repairs the method for reservoir drawdown band, it is characterized in that, plantation is adopted with the following method:

1. block stone ring border

Build the cofferdam that meets water and do the process of wave resistance brush, silt sediment, piles up gabion, in gabion, fill out finger stone, fixing plant, places block stone fix for strain root of newly planting;

2. gravel environment

Pile up gabion, in gabion, fill out finger stone, fixing plant;

3. deposit earth, loam, sandstone environment

Select iron wire grid, and with the reinforcing of staple corner, at the in-built earth of snakeskin bag, loam or sandstone, pile up layer by layer, to plant plant in the upper shed of snakeskin bag.