The effect of temperature on small-scale meteorological stations on soil carbon and nitrogen is more complicated. As the temperature rises and the biomass yield increases, organic residues returned to the soil increase, contributing to the accumulation of soil carbon and nitrogen, and the increase in temperature also promotes the decomposition of organic matter. The effect of temperature on soil carbon and nitrogen is determined by the amount of organic residue returned and the rate of decomposition of organic matter.
The effect of soil surface temperature on soil carbon and nitrogen is greater than that of precipitation. Soil carbon and nitrogen are greatly affected by longitude. The analysis of small weather stations shows that the spatial distribution of soil carbon and nitrogen in farmland in Liaoning Province is greatly affected by water, but it cannot explain the actual impact of soil carbon and nitrogen. At present, extreme weather events are increasingly frequent, and carbon and nitrogen are bound to have an impact on the soil. Small meteorological stations are required to further research and analysis in order to find the key meteorological factors that affect soil carbon and nitrogen, and provide a reliable basis for the future assessment of carbon revenue and expenditure.
Comprehensive analysis of the distribution characteristics of small-scale meteorological station profiles in the soil organic carbon and total nitrogen, the total can be seen as the depth of soil decreases. Different soil depths, soil organic carbon and total nitrogen were affected by meteorological factors at different levels. The combined effects of soil carbon and nitrogen content in soil surface are mainly precipitation and annual average temperature, as well as lower annual average soil temperature.
The fluorinated mica crystals have very good high temperature resistance, corrosion resistance and light transmission properties, and can work for a long time at a high temperature of 1100Â°C.
No reaction occurs with strong acids and alkalis; complete light transmittance (pure and transparent). The natural mica plates traditionally used in the observation window of high-pressure boiler water level gauge are all brown, and the light transmittance is not good, and the temperature resistance is in the range of 200-700Â°C, especially the corrosion resistance is poor. The boiler steam drum water in thermal power plants contains alkali. After reacting with natural mica and alkali, it is washed with hot air and hot water, and it is prone to fluffing, scaling, and being broken. In the short term (about 1-2 months), the water level is not clearly understood. After being broken, it can easily cause leakage. The fluorite mica does not react with the acid-base solution, and does not react with water in the hydration reaction, so that it does not form a layer, does not scale, and does not break. In the long-term (2 to 3 years) scouring of high-temperature and high-pressure water (including acid and alkali), the original clarity and transparency can still be maintained. In China, it has been widely applied to the observation window of steam boiler water level gauge in high-pressure boilers of thermal power plants. It has also been selected by Japanese BBK company and NDK (Colin) company for the observation window of high pressure boiler drum level gauge.
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