Soil moisture is the interaction of climate, soil and vegetation dynamics of the water cycle and the water cycle. Many factors are the key factors affecting the structure of the vegetation. Due to the relatively high soil moisture content in the region, the average soil moisture content measured by the soil moisture meter has a greater change in slope, slope direction, and vegetation coverage, and the effect of soil moisture is very strongly manifested in spatial variability at different scales. in.
The soil moisture meter measures the soil moisture content, randomly sets three 1m×1m square plots around the sampling point, and obtains the vegetation of the plot by visually measuring the percentage of the vertical projected area of ​​each plot plant's above-ground part of the plot area. Coverage, taking the average of the vegetation coverage of the three quadrats as the vegetation cover of the sampling point. When the spatial variability of soil moisture in the alpine steppe ecosystem in the permafrost region of the Tibetan Plateau was analyzed, the classical statistical method was used for analysis.
In the study area of ​​the soil moisture analyzer, the average value of soil moisture content in the direction of the average cross-section has a gradually increasing trend, the lowest is the 0~5cm layer, the average soil moisture content is 19.43%, the highest is 40~50cm layer, 25.37% . The mean value and mean value of soil moisture in each section of the section are very close. The soil moisture meter shows that the central tendency of soil moisture distribution is not determined by the outliers, and the absolute variability of soil moisture decreases in the vertical section.
Research on the spatial variability of soil moisture is one of the hot topics in hydrology and soil science. The research on the spatial variability of soil moisture plays an important role in understanding the climate change pattern, developing and evaluating the land surface model, designing the surface soil moisture analyzer observation network, and quantitatively studying the relationship among regional ecology, hydrology and geology. The soil moisture meter measures the spatial and temporal changes in soil moisture on large scales. The impact of ecosystems on physical environmental changes, especially on the surface, affects the latent heat flux and sensible heat of the energy sector. This not only results in vertical flow of energy and water. It also leads to the level of water flow.
The soil moisture meter measures the soil moisture content, randomly sets three 1m×1m square plots around the sampling point, and obtains the vegetation of the plot by visually measuring the percentage of the vertical projected area of ​​each plot plant's above-ground part of the plot area. Coverage, taking the average of the vegetation coverage of the three quadrats as the vegetation cover of the sampling point. When the spatial variability of soil moisture in the alpine steppe ecosystem in the permafrost region of the Tibetan Plateau was analyzed, the classical statistical method was used for analysis.
In the study area of ​​the soil moisture analyzer, the average value of soil moisture content in the direction of the average cross-section has a gradually increasing trend, the lowest is the 0~5cm layer, the average soil moisture content is 19.43%, the highest is 40~50cm layer, 25.37% . The mean value and mean value of soil moisture in each section of the section are very close. The soil moisture meter shows that the central tendency of soil moisture distribution is not determined by the outliers, and the absolute variability of soil moisture decreases in the vertical section.
Research on the spatial variability of soil moisture is one of the hot topics in hydrology and soil science. The research on the spatial variability of soil moisture plays an important role in understanding the climate change pattern, developing and evaluating the land surface model, designing the surface soil moisture analyzer observation network, and quantitatively studying the relationship among regional ecology, hydrology and geology. The soil moisture meter measures the spatial and temporal changes in soil moisture on large scales. The impact of ecosystems on physical environmental changes, especially on the surface, affects the latent heat flux and sensible heat of the energy sector. This not only results in vertical flow of energy and water. It also leads to the level of water flow.
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