Method of collaborative protection of topsoil and turf based on the combination of remote sensing zoning and field survey

Abstract

The invention provides a surface soil and turf coordinating protection method based on combination of remote sensing partitioning and field investigation. The partitioned surface soil and turf coordinating protection method comprises the steps that vegetation coverage factors are screened as vegetation factors, annual accumulated temperature and regional dryness indexes are screened as environmental factors, the vegetation factor grades and the environment factor grades are partitioned, field inspection and soil sampling are conducted on various forms of combinations of the two evaluation grades, soil fertility and texture analysis are conducted. According to the surface soil and turf coordinating protection method, a full scientific basis is provided for turf stripping and soil stripping, the availability of field surface soil is improved to a maximum extent, the establishment effect of vegetation is improved, the working efficiency is improved to a maximum extent, and economic benefits are generated.

Description

technical field [0001] The invention relates to a method for protecting topsoil and turf in the ecological field, in particular to a method for synergistic protection of topsoil and turf based on the combination of remote sensing zoning and on-site investigation. Background technique [0002] In high-cold and high-altitude areas, limited by factors such as high cold, drought, and windy conditions, the ecological environment is extremely fragile, and it is difficult for vegetation to recover once it is damaged. In the construction of infrastructure such as roads and railways, it is inevitable to cause damage to the vegetation along the line. Not only are there few species of plants available for restoration, but the restoration effect is not ideal. Highways and railways have long mileage and span multiple vegetation climate zones. There are great differences in climate conditions, water and heat conditions, and vegetation types along the lines. The vegetation protection and u...

AI Technical Summary

Problems solved by technology

[0003] 1. The lack of comprehensive evaluation of the regional ecological environment has led to the lack of regional allocation restrictions on the measures for turf protection or restoration in engineering practice. Some turf in areas with relatively good original living environments are transferred across ecological regions and used in unsuitable areas, resulting in the occurrence of turf planting. Reverse succession, even mass death

[0004] 2. There is a lack of technical basis for the stripping thickness, stripping protection and utilization of topsoil. There is a lack of scientific definition and research on which soils can be used and which soils cannot be used. Many engineering practices adopt a uniform stripping thickness design, which makes some high-quality Soil resources are wasted, on the other hand, some soil types with poor soil quality are protected

[0005] 3. Although some domestic studies have studied the reasonable stripping thickness of soil under different land use types, the design of stripping thickness is mostly based on the nutrient status of the soil. Deficiency, the lack of plant growth is not only nutrients, but more importantly, the lack of growth carriers that can provide basic water and fertilizer retention

[0006] 4. At present, there is little research and design for the protection and utilization of vegetation and topsoil in China. For example, turf utilization and topsoil protection are seldom coordinated for comprehensive consideration. In engineering practice, there are turf in some places but not enough topsoil bedding Under the turf, resulting in the failure of the turf backlaying

[0007] 5. In today's practice of topsoil protection and utilization, the protection and utilization of topsoil seed banks are insufficiently considered. Most research or engineering practices only use topsoil resources from the perspective of topsoil nutrients, which has affected the effectiveness of native plants; a large number of former Human studies have shown that the soil seed bank is concentrated within 10cm of the soil surface. Under the traditional stripping protection method, the soil thickness of 20-30cm or even deeper in the surface layer is mixed, stripped, stacked and reused, which makes the surface soil seed bank "diluted" , so that the density of the seed bank per unit volume of soil is greatly reduced, which is not conducive to the establishment of native plants

Images