Soil sampling is the basis of soil testing. Therefore, summarizing soil sampling methods and their applications can point out the problems in the field of research and propose future research directions. Let me explain to you what different soils have on sampling.

1. The influence of soil profile reconstruction on sampling

 Due to the process of excavation, transportation, and dumping during mining, the ground surface is destroyed, which disturbs the undisturbed soil and degrades the soil characteristics in the mining area. Its evolution forms are mutation, abrupt and compound types. Studies have shown that the soil water content of the collapsed land caused by mining in the coal mining area is lower than that of the non-collapsed land. The collapse causes the spatial variability of the soil properties to become larger. Significant changes in surface soil fertility.

2. The impact of soil improvement on sampling

Soil physical improvement, chemical improvement, and biological improvement are measures such as fertilizing and planting crops to optimize the soil and improve the ecological environment. Physical improvement such as plowing can loosen the soil and optimize its structure. The reclaimed land in the mining area has poor soil. Fertilization in the soil can increase soil organic matter and improve soil characteristics. In addition, the fertility of the soil can be improved by planting fast-growing herbs and accelerating the formation of the humus layer. The improved soil has different sampling results.

3. The impact of integrated technology on sampling

The integrated reclamation technology combines the reclamation technology with the mining technology. While mining, the stripped rocks and topsoil are effectively used for land reclamation, which realizes reclamation while mining and greatly shortens the period of land reclamation. The integrated process of "stripping-mining-transporting-discharging-building-rehabilitation" is to strip the upper soil layer and rock layer of the ore body. Mining is the mining of coal on the exposed ore body after the soil layer is stripped. The stripped soil and rock are discarded to form a dump site, which is to reshape the topography and landform, and to rebuild the soil and vegetation. A variety of technologies are involved in the integrated process, which has a certain impact on the spatial variability of soil, thereby affecting sampling.

4. The impact of reclamation time on sampling

The spatial variability of reconstructed soil after reclamation also changes with the increase of reclamation time. The bulk density of the soil just after reclamation is relatively large, and the soil fertility has not reached the same level as the original landform. With the increase of the number of years of reclamation, the soil gradually becomes loose, and the growth of vegetation optimizes the soil structure and increases the content of nutrients such as organic matter in the soil. The soil structure and the quality of environmental factors gradually approach the original landform.

In short, there are many factors that affect sampling, such as soil characteristics, sampling methods, sampling equipment, etc., are all factors that affect sampling. Xiongtai Machinery has professional sampling equipment and sampling technical guidance. Welcome to inquire!