Method for sampling wetland soil

Abstract

The invention provides a method for sampling wetland soil. The method uses the climate characteristics, the sampling time is selected in the early winter in a seasonal or permanent freeze-thaw zone, the column-core sampling of the wetland soil is carried out by cooperating a gasoline power soil auger and a depth control peat drill when a surface layer of the wetland soil is frozen with at least 20cms of thickness. The frozen wetland surface layer is convenient for depth sampling, the operation is relatively convenient, even the portable vehicles can be carried in the wetland, so that a great deal of sampling time can be saved, the labor intensity of operators can be reduced simultaneously, and the work efficiency is greatly enhanced. In addition, under the condition of freezing the surface layer soil, no disturbance is generated when the activity is carried out on the wetland, more importantly, the collected column-core is easy for forming and segmenting. According to the wetland soil sampling of the Sanjiang Plain wetland proves that the method for sampling wetland soil of the invention is capable of solving the wetland soil sampling problem in the seasonal or permanent freeze-thaw zone.

Description

technical field [0001] The invention relates to a wetland soil sampling method, which is suitable for the wetland soil sampling method in seasonal or permanent freeze-thaw areas. Background technique [0002] Wetlands are distributed between land systems and water systems, and are natural complexes formed by the interaction of land systems and water systems. Wetlands grow many characteristic plants in wetlands under the specific environment where the soil is soaked in water. Wetlands have many functions. It can be used as a water source for direct use or supplement groundwater. It can also effectively control floods and prevent soil desertification. It can also retain sediment, toxic substances, and nutrients, thereby improving environmental pollution. It is called " Kidneys of the Earth". Wetland is the focus of widespread attention in the world today, and it directly affects the natural ecological environment, the progress of human civilization and the development of soc...

AI Technical Summary

Problems solved by technology

First of all, it is extremely inconvenient to move in wetlands and requires some special equipment, which can only be borne by people, which greatly increases the difficulty of sampling

Second, since the soil is relatively wet, this will necessarily cause disturbance to the topsoil

There are abundant plant roots in the surface soil of the wetland, and it is time-consuming and labor-intensive to cut, and it is difficult to maintain the integrity of the soil column

The moisture content of the wet subsurface soil is also relatively high, and the drilled core is not easy to take out