As an important part of plant production, root system is an important organ for plant water absorption, nutrient absorption, and a series of other synthetic functions. Root analysis is used to analyze the growth of plant roots, and the interspecific relationship and competition mechanism of intercropping system are further studied. It is of great significance to discuss the intercropping system, reasonable density and water and fertilizer management of the intercropping system. In the forest ecosystem material and energy cycle plays a very important role. The root system is an important organ for plants to absorb nutrients and moisture, and at the same time, it directly participates in the system's material circulation and energy flow, and plays an important role in improving soil structure, fertility and soil productivity. With the deepening of research methods and understanding of the root system, forest roots ecology has become a rapidly emerging new discipline.
At present, there are many researches on Pinus tabulaeformis, but there are few studies on the root system of Pinus tabulaeformis in high altitude areas. This study explored the spatial distribution of Pinus tabulaeformis root height in Helan Mountain, and planted, transplanted and afforested Pinus tabulaeformis at high altitude. Provide theoretical basis and provide reference for constructing the simulation model of root distribution of Pinus tabulaeformis in Helan Mountain. It is of great significance to make clear that the root morphology of Pinus tabulaeformis has an important effect on the productivity, stability and health of single tree.
The root system is not only a plant-fixed and mechanically-supported organ. At the same time, the root system is also crucial in the absorption of water and nutrients, and the assimilate distribution. However, research on plant root systems in natural ecosystems did not take place until the 1970s. With the deepening of research on biogeochemical cycles, the determination of biomass has gradually gained attention. It is estimated that the annual biomass of underground parts (mainly fine roots) in forest ecosystems is greater than the above-ground parts, especially in soil-poor forest sites. The research results of forest biomass and productivity have played an important role in enriching the global vegetation biomass, productivity pattern, restoration, management and management of vegetation. The ability of plants to compete with soil moisture and nutrients depends to a large extent on the spatial and temporal distribution of the plant roots in the soil. Therefore, the quantitative study of the roots of trees
From the perspective of roots that hold trees and absorb water and nutrients, the growth of the above-ground parts of forests reflects the growth conditions of underground roots, and the two are unified. However, from the perspective of the roots' absorption of water and nutrients and their efficiency, no doubt, the role of roots, small roots, and fine roots is greater. In particular, fine root growth and turnover rate play an important role in carbon allocation and nutrient cycling in forest trees, but Since the share of this part of the root system is very small (only 10% of the total root volume), it is easy to mask the differences between the above-ground parts of the forest and the underground root system by using the total root volume. The relationship between rhizosphere nutritional dynamics, soil enzyme activity and root biomass may be helpful in revealing the productivity, stability and health of different dominance grades of Pinus tabulaeformis.
Other Instruments: Soil Analyzer Soil Moisture Meter
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