The relative properties of leaf wetness and flow velocity in different seasons were different. The leaf humidity test showed a significant positive correlation with the flow rate in spring, and there was a significant negative correlation in autumn. The main environmental factors affecting fluid flow are solar radiation, air temperature, air humidity, and leaf surface humidity. To study the characteristics of the ancient sap flow in the soil and water conservation tree species of southern China and its response to environmental factors, to master the water physiology mechanism of the ancient cedar tree, in order to provide a theoretical basis for the ecological restoration and conservation research of the ancient cedar tree.
The use of the values ​​of the leaf surface humidity analyzer to describe the cubic curve equation basically reflects the different trends of the flow in spring and autumn. That is, in spring, the flow rate increases with the increase of the humidity of the Cryptomeria fortunei, and the flow rate decreases when the leaf surface humidity exceeds the critical value. In autumn, the flow rate decreases with the increase of leaf surface humidity. The rhythm difference of the flow rate with the change of leaf surface humidity in the spring and autumn seasons is also due to the coupling of multiple factors in the environment.
The change in air humidity is negatively correlated with the light intensity. When the light intensity is high, the air humidity is small. There is no doubt that the increase in air humidity will reduce the flow rate. That is, the change of air humidity has a negative correlation with the liquid flow rate. When the flow rate of the cedar reaches a maximum value, the air humidity appears a minimum value. The change in air humidity is negatively related to the liquid flow rate. The main reason is that as the air humidity increases, the gradient of the water vapor pressure difference between the water vapor in the boundary layer and the air cavity in the leaf cavity decreases, the water vaporization process becomes slower, and the transpiration rate of the trees becomes slower. The flow rate becomes smaller.
According to the relationship between the flow rate and leaf surface humidity of cedar in spring and autumn, it is known that the humidity of leaf surface of Cryptomeria fortunei in spring is low and the flow rate of sap flow is relatively large. In autumn, the humidity of leaf surface is relatively high and the flow rate is small. The speed and leaf surface humidity showed a strong correlation. In summary, the method of measuring the leaf surface humidity meter found that within a certain range, the sap flow rate is positively correlated with the photosynthetically active radiation and air temperature, negatively related to the air humidity, and the flow rate and the leaf surface humidity in different seasons. The associated attributes are different. At the same time, it was found that the relationship between the sap flow rate and carbon dioxide concentration was low.
The use of the values ​​of the leaf surface humidity analyzer to describe the cubic curve equation basically reflects the different trends of the flow in spring and autumn. That is, in spring, the flow rate increases with the increase of the humidity of the Cryptomeria fortunei, and the flow rate decreases when the leaf surface humidity exceeds the critical value. In autumn, the flow rate decreases with the increase of leaf surface humidity. The rhythm difference of the flow rate with the change of leaf surface humidity in the spring and autumn seasons is also due to the coupling of multiple factors in the environment.
The change in air humidity is negatively correlated with the light intensity. When the light intensity is high, the air humidity is small. There is no doubt that the increase in air humidity will reduce the flow rate. That is, the change of air humidity has a negative correlation with the liquid flow rate. When the flow rate of the cedar reaches a maximum value, the air humidity appears a minimum value. The change in air humidity is negatively related to the liquid flow rate. The main reason is that as the air humidity increases, the gradient of the water vapor pressure difference between the water vapor in the boundary layer and the air cavity in the leaf cavity decreases, the water vaporization process becomes slower, and the transpiration rate of the trees becomes slower. The flow rate becomes smaller.
According to the relationship between the flow rate and leaf surface humidity of cedar in spring and autumn, it is known that the humidity of leaf surface of Cryptomeria fortunei in spring is low and the flow rate of sap flow is relatively large. In autumn, the humidity of leaf surface is relatively high and the flow rate is small. The speed and leaf surface humidity showed a strong correlation. In summary, the method of measuring the leaf surface humidity meter found that within a certain range, the sap flow rate is positively correlated with the photosynthetically active radiation and air temperature, negatively related to the air humidity, and the flow rate and the leaf surface humidity in different seasons. The associated attributes are different. At the same time, it was found that the relationship between the sap flow rate and carbon dioxide concentration was low.
Sodium formate is one of the simplest organic carboxylates, white crystals or powders,density1.919g/cm3. with slightly Formic Acid odor. Easily soluble in water, and glycerin, slightly soluble in alcohol. Melting point253℃ (Anhydrous substance), odorless. Has reducibility.Slightly deliquescent and hygroscopicity.Non-corrosive, non-inflammable, the sodium formate is non-toxic to human body.
Sodium formate is mainly used in the production of insurance powder, Oxalic Acid and formic ACID.It is used as camouflage acid in chromium tannery, catalyst, stabilizer and reductant in printing and dyeing industry.
Sodium Formate,sodium formate 98%, sodium formate 95%
HENAN JINHE INDUSTRY CO.,LTD , https://www.hntitaniumdioxide.com