Author(s)

Liang Xianghan ¹

Affiliation(s)

¹ Management Committee of Beijing Olympic Park Central Area, Beijing, 100101, China

Corresponding Author

Liang Xianghan

ABSTRACT

In order to deeply analyze the factors that affect the change of soil moisture, this study carried out long terms and continuous monitoring of soil moisture at different depths of fixed sandy land of Artemisia ordosica community in Maousu sandy land from a large time scale and different levels of spatial scale, And observed the distribution of soil moisture at 0-200 cm layer during the study period, Redundancy analysis is used to analyze the factors (including meteorological, root and soil factors) that affect the soil water storage in each time period, identifying the redundant factors, and then comprising the main variables to calculate their contribution rate to the change of soil water storage The results showed that (1) RDA analysis was adapted in this study, and 13 factors affecting soil water storage were considered These environmental factors accounted for more than 85% of the change of soil water storage in the first two ranking axes, and the maximum value of EC index in the first two axes also exceeded 90% The interpretation results were satisfactory (2) After applying the previous selection and Monte Carlo replacement test, it can be included that only precision, precision interval, precision intensity, root biomass, and initial soil moisture can have a significant impact on soil moisture The top two environmental factors in various places, time periods and soil layers can provide more than 80% of RCC (3) After identifying redundant variables, although the number of environmental factors has decreased a lot, the degree of interpretation of environmental factors on soil water storage has not decreased significantly For the soil water layer with sharp change and active soil water layer in the non-growing season, root biomass and precision are the first two factors affecting the change of soil water storage; In the growing season, root biomass and initial soil water content are the first two factors that affect the change of soil water storage.

KEYWORDS

Precision; Mechanism; Soil moisture; Mu Us Sandy Land

CITE THIS PAPER

Liang Xianghan, Soil Moisture Mechanism in Fixed Sand Dunes of Artemisia Ordosica Community in Mu Us Sandy Land. Environment, Resource and Ecology Journal (2024) Vol. 8: 114-127. DOI: http://dx.doi.org/10.23977/erej.2024.080115.

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