A seeding method and application of ecological restoration of river valley-type hillside flowing sandy land

A technology for ecological restoration and sandy land, applied in land preparation methods, applications, agricultural machinery and implements, etc., can solve the problems of high engineering treatment cost, seed displacement, low seed survival rate, etc. The effect of high seed survival rate

Active Publication Date: 2021-09-07
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Aiming at the problems of existing river valley-type hillsides with slopes, serious displacement of seeds during sowing, low seed survival rate, and high cost of engineering treatment, the present invention provides a new valley-type hillside with low cost and good vegetation restoration effect Seeding method for ecological restoration of shifting sandy land

Method used

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  • A seeding method and application of ecological restoration of river valley-type hillside flowing sandy land
  • A seeding method and application of ecological restoration of river valley-type hillside flowing sandy land
  • A seeding method and application of ecological restoration of river valley-type hillside flowing sandy land

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Embodiment 1

[0039] The technical solutions of the present invention are specifically described below in conjunction with preferred examples. It should be understood that the preferred examples are only used to better describe the technical methods of the present invention, and do not constitute further limitations on the technical methods of the present invention.

[0040] This example takes the restoration of sandy land vegetation in Gongga County, Shannan City, Tibet as an example to describe in detail the method of seed sowing and its application in ecological restoration of flowing sandy land on valley-shaped hillsides.

[0041] The valley-type hillside flowing sand land selected in this embodiment is located in Gongga County, Shannan City, Tibet. The method for sowing seeds on the valley-type hillside flowing sand land provided by this embodiment includes the following steps:

[0042]1) Select the valley-type hillside flowing sandy land without ground treatment and vegetation reconstr...

Embodiment 2

[0061] This embodiment is basically the same as Embodiment 1, the difference is:

[0062] The fixed interval between every two impressions is 2.5m, and the depth of the impressions is 25cm. During the sowing process, the seeds are sown 1.5m above the impressions.

[0063] The above-mentioned seed sowing method was applied to the ecological restoration of the valley-type hillside flowing sand, and the seeds were sown in June 2009, and the experimental area was sampled in July 2017.

[0064] (1) Changes in soil nutrients

[0065] Table 2 shows the comparison of soil nutrient content changes before and after restoration.

[0066] Table 2 Comparison of soil nutrient content changes before and after restoration

[0067]

[0068] Comparing the soil nutrients between unrepaired and repaired sandy land in 2009, it can be seen from Table 2 that the analysis of sandy land soil nutrients in 2017 shows that the organic matter, total nitrogen, available phosphorus, and available phosp...

Embodiment 3

[0072] This embodiment is basically the same as Embodiment 1, the difference is:

[0073] The fixed interval between every two impressions is 2.2m, and the depth of the impressions is 23cm. During the sowing process, the seeds are sown 1.3m above the impressions.

[0074] The above-mentioned seed sowing method was applied to the ecological restoration of the valley-type hillside flowing sand, and the seeds were sown in June 2009, and the experimental area was sampled in July 2017.

[0075] (1) Changes in soil nutrients

[0076] The comparison of soil nutrient changes before and after restoration is shown in Table 3.

[0077] Table 3 Comparison of soil nutrient content changes before and after restoration

[0078]

[0079] Comparing the soil nutrients of unrepaired and repaired sandy land in 2009, it can be seen from Table 3 that the analysis of soil nutrients in the repaired land in 2017 shows that organic matter, total nitrogen, available phosphorus, and available potass...

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Abstract

The present invention relates to a seeding method and application for ecological restoration of valley-type hillside flowing sand, and relates to the technical field of ecological restoration. Imprint; 2) sowing along the position of the imprint, during the sowing process, plant seeds are sprinkled above the imprint; 3) draw a second imprint horizontally along the uphill direction of the first imprint, and Sowing in the same way; 4) The sowing position continues to shift upwards, and the sowing of the entire hillside flowing sand is completed in a repeated manner, and a fixed interval is set between each two impressions. The method can make use of the slope and gravity factors of the flowing sand on the hillside to make the seeds automatically cover the sand and penetrate the dry sand layer. Compared with the prior art, it not only simplifies the operation, saves the cost, but also improves the flow rate of the valley-type hillside. The effect of vegetation restoration on sandy land.

Description

technical field [0001] The invention relates to the technical field of ecological restoration, in particular to a seeding method and application for ecological restoration of valley-type hillside flowing sandy land. Background technique [0002] The sand particles formed by the strong freezing and physical weathering of the Qinghai-Tibet Plateau are continuously deposited on the riverbed in the form of soil erosion. Under the dual effects of the high-altitude westerly belt and the valley topography, sand particles are blown from the river bed to the river beach, river bank and hillside every winter and spring, and some are even blown to the valley of the secondary tributary, causing serious land desertification. This kind of sandy land is mainly distributed in Tibet's "one river and three rivers" (the Yarlung Zangbo River and its tributaries Lhasa River, Nianchu River, and Niyang River), accounting for about 30% of the total area of ​​desertified land in Tibet. The types can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B79/02
CPCA01B79/02Y02A20/402
Inventor 李海东廖承锐高媛赟马伟波王燕方颖
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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