scholarly journals Application of Time Series Analysis in Soil Moisture of Fixed Dune on Korqin Sandy Land, Northern China

2020 ◽  
Keyword(s):  
Time Series ◽  
Soil Moisture ◽  
Time Series Analysis ◽  
Soil Depth ◽  
Time Lag ◽  
Soil Layer ◽  
Growing Season ◽  
Northern China ◽  
Sandy Land ◽  
Series Analysis

<p>Time series analysis is a very effective method to analyze the dynamic characteristics of soil moisture at long-term scale. In this study, we have used the time series to analyze the relationship between precipitation and soil moisture on fixed dune at different soil depths (from 0 to 120 cm) during the growing season (from May to September) of 2006-2010 in Korqin Sandy Land, northern China. The results indicate that: (1) The precipitation is a relatively independent time series and has no obvious autocorrelation. Precipitation in an earlier stage has no obvious effect on the later stage in the growing season. (2) Soil moisture in different soil layers has higher autocorrelation; and the autocorrelation of soil moisture in each soil layer is significantly weakened with the increase in time lag interval. (3) The correlation coefficient between soil moisture and precipitation in each soil layer is higher at the time lag interval of k = 0; with the increase in soil depth, the correlation is gradually weakened. (4) The maximum correlation coefficients of soil moisture series and precipitation series in different soil depths were obtained at the time lag interval of k = 0.</p>

TIME SERIES ANALYSIS OF SOIL MOISTURE AND RAINFALL ALONG A LINE TRANSECT IN ARID RANGELAND

Soil Science ◽  
1991 ◽  
Vol 152 (3) ◽  
pp. 189-198 ◽  
Author(s):  
MALIHA S. NASH ◽  
PETER J. WIERENGA ◽  
ALLAN GUTJAHR
Keyword(s):  
Time Series ◽  
Soil Moisture ◽  
Time Series Analysis ◽  
Line Transect ◽  
Series Analysis ◽  
Arid Rangeland

scholarly journals Hydrodynamic characteristics of a typical karst spring system based on time series analysis in northern China

China Geology ◽  
2021 ◽  
Vol 4 (3) ◽  
pp. 434-448
Author(s):  
Yi Guo ◽  
◽  
Feng Wang ◽  
Da-jun Qin ◽  
Zhan-feng Zhao ◽  
...  
Keyword(s):  
Time Series ◽  
Time Series Analysis ◽  
Northern China ◽  
Hydrodynamic Characteristics ◽  
Karst Spring ◽  
Series Analysis ◽  
Spring System

scholarly journals Responses of vertical soil moisture to rainfall pulses and land uses in a typical loess hilly area, China

Solid Earth ◽  
2015 ◽  
Vol 6 (2) ◽  
pp. 595-608 ◽  
Author(s):  
Y. Yu ◽  
W. Wei ◽  
L. D. Chen ◽  
F. Y. Jia ◽  
L. Yang ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Time Lag ◽  
Soil Layer ◽  
Growing Season ◽  
Vegetation Restoration ◽  
Pinus Tabulaeformis ◽  
Heavy Rainfall Event ◽  
Hydrological Process ◽  
Hilly Area ◽  
Moisture Variation

Abstract. Soil moisture plays a key role in vegetation restoration and ecosystem stability in arid and semiarid regions. The response of soil moisture to rainfall pulses is an important hydrological process, which is strongly influenced by land use during the implementation of vegetation restoration. In this study, vertical soil moisture variations of woodland (Pinus tabulaeformis), native grassland (Stipa bungeana), shrubland (Hippophea rhamnoides), cropland (Triticum aestivum) and artificial grassland (Onobrychis viciaefolia) in five soil profiles were monitored in a typical loess hilly area during the 2010 growing season. The results demonstrated that rainfall pulses directly affected soil moisture variation. A multi-peak pattern of soil moisture appeared during the growing season, notably in the surface soil layer. Meanwhile, the response of each vegetation type to rainfall was inconsistent, and a time-lag effect before reaching the peak value was detected, following each heavy rainfall event. The response duration of soil moisture, however, varied markedly with the size of rainfall events. Furthermore, higher soil water content was detected in grassland and shrubland. Woodland was characterized by relatively lower soil moisture values throughout the investigation period. Our research suggests that vegetation restoration efforts should give priority to grassland and shrubland at the research site. We suggest that more studies should be focused on the characteristics of community structure and spatial vegetation distribution on soil moisture dynamics, particularly within the grass and shrub ecosystems.

scholarly journals Responses of vertical soil moisture to rainfall pulses and land uses in a typical loess hilly area, China

2014 ◽  
Vol 6 (2) ◽  
pp. 3111-3139 ◽  
Author(s):  
Y. Yu ◽  
W. Wei ◽  
L. D. Chen ◽  
L. Yang ◽  
F. Y. Jia ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Time Lag ◽  
Soil Layer ◽  
Growing Season ◽  
Vegetation Restoration ◽  
Pinus Tabulaeformis ◽  
Heavy Rainfall Event ◽  
Hydrological Process ◽  
Hilly Area ◽  
Moisture Variation

Abstract. Soil moisture plays a key role in vegetation restoration and ecosystem stability in arid and semiarid regions. The response of soil moisture to rainfall pulses is an important hydrological process, which is strongly influenced by land use during the implementation of vegetation restoration measures. In this study, vertical soil moisture variations of woodland (Pinus tabulaeformis), native grassland (Stipa bungeana), shrubland Hippophea rhamnoides), cropland (Triticum aestivum) and artificial grassland (Onobrychis viciaefolia) in five soil profiles were monitored in a typical loess hilly area during the 2010 growing season. The results demonstrated that rainfall pulses directly affected soil moisture variation. A multi-peak pattern of soil moisture appeared during the growing season, notably in the surface soil layer. Meanwhile, the response of each vegetation type to rainfall was inconsistent, and a time-lag effect before reaching the peak value was detected, following a heavy rainfall event. The response duration of soil moisture, however, varied markedly with the size of rainfall events. Furthermore, higher soil water content was detected in grassland and shrubland. Woodland was characterized by relatively lower soil moisture values throughout the investigation period. Our research suggests that vegetation restoration efforts should give priority to grassland and shrubland at the research site. We suggest that more studies should be focused on the characteristics of community structure and spatial vegetation distribution on soil moisture dynamics, particularly within the grass and shrub ecosystems.

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