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In the semi-arid loess plateau region where the ecological environment is very fragile, the key factor that restricts the restoration and reconstruction of vegetation is water. In this region, the plant's growth water mainly depends on precipitation, but due to the semi-arid climate conditions, the precipitation is very limited. Therefore, the rational and effective use of the limited water resources in the Loess Plateau is the key to the construction of forest grass. For the determination of soil moisture can be recorded using a soil moisture recorder.
With the increasing investment in scientific research, the use of soil moisture recorders will become more and more widespread in China's scientific research. The frequency domain reflectometers have higher accuracy and have the advantages of rapid, accurate and continuous measurement. They do not disturb the soil and can automatically Monitoring soil moisture and its changes. Advantages are durability, low price, and no radioactivity. The disadvantage is that soil moisture monitoring applications in the field need to be calibrated due to different soil types, which is time-consuming and laborious. The good performance of soil moisture recorder and low price make It is increasingly favored in soil moisture determination.
The study of soil water availability is a hot issue in soil moisture research. As the part of soil water that can be directly used by plants, the content and distribution of available water directly relate to the vegetation type and vegetation growth status. The correct estimation of effective water is The core issue of estimating the status of water resources in the loess area is the premise for the sustainable development of natural resources in the loess area. However, since the validity of soil water has not been defined in strict terms, the research methods and standards for evaluation are also different from each other, and thus soil moisture. The effectiveness has always been one of the main concerns and debates in soil physics and related disciplines.
For now, the research on soil moisture in the Loess Plateau is mostly described by static concepts. However, in the future, it is necessary to further study the mechanism of soil water movement, roots, and other principles. In addition, it is necessary to establish a mathematical model for the absorption of soil moisture by plant roots and the dynamic model of soil water availability in order to truly solve the problem of soil water availability. Through soil moisture recorders, we can grasp the dynamics of soil moisture dynamics in semi-arid loess hilly areas. Establish a correlation model of environmental factors and dynamic changes of soil moisture, conduct large-scale prediction of soil moisture, regulate and manage ecological restoration and agricultural production activities in semi-arid areas.
With the increasing investment in scientific research, the use of soil moisture recorders will become more and more widespread in China's scientific research. The frequency domain reflectometers have higher accuracy and have the advantages of rapid, accurate and continuous measurement. They do not disturb the soil and can automatically Monitoring soil moisture and its changes. Advantages are durability, low price, and no radioactivity. The disadvantage is that soil moisture monitoring applications in the field need to be calibrated due to different soil types, which is time-consuming and laborious. The good performance of soil moisture recorder and low price make It is increasingly favored in soil moisture determination.
The study of soil water availability is a hot issue in soil moisture research. As the part of soil water that can be directly used by plants, the content and distribution of available water directly relate to the vegetation type and vegetation growth status. The correct estimation of effective water is The core issue of estimating the status of water resources in the loess area is the premise for the sustainable development of natural resources in the loess area. However, since the validity of soil water has not been defined in strict terms, the research methods and standards for evaluation are also different from each other, and thus soil moisture. The effectiveness has always been one of the main concerns and debates in soil physics and related disciplines.
For now, the research on soil moisture in the Loess Plateau is mostly described by static concepts. However, in the future, it is necessary to further study the mechanism of soil water movement, roots, and other principles. In addition, it is necessary to establish a mathematical model for the absorption of soil moisture by plant roots and the dynamic model of soil water availability in order to truly solve the problem of soil water availability. Through soil moisture recorders, we can grasp the dynamics of soil moisture dynamics in semi-arid loess hilly areas. Establish a correlation model of environmental factors and dynamic changes of soil moisture, conduct large-scale prediction of soil moisture, regulate and manage ecological restoration and agricultural production activities in semi-arid areas.
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