Stemflow and throughfall contributions to soil water recharge under trees with differing branch architectures

2015 ◽  
Vol 29 (18) ◽  
pp. 4068-4082 ◽  
Author(s):  
R. Bialkowski ◽  
J. M. Buttle
1990 ◽  
Vol 70 (2) ◽  
pp. 125-136 ◽  
Author(s):  
C. CHANG ◽  
T. G. SOMMERFELDT ◽  
T. ENTZ ◽  
D. R. STALKER

Nineteen years of soil moisture content data at Lethbridge and two locations near Turin (Turin 1 and Turin 2) in southern Alberta were examined to evaluate the efficiency of follow for conserving moisture, and to calculate the long-term mean amount of water recharge during growing and nongrowing seasons under a fallow-cereal, 2-yr rotation and a continuous cropping system. Soil samples were taken annually from 1969 to 1987 to a depth of 120 cm in 30-cm intervals in the spring (early May) and fall (late September). A method for testing differences of means between nonstandard data using localized uncertainty associated with sliding polynomial smoothing was used to test for differences in the soil moisture contents due to cultural practices. The available soil moisture content of the soil to 120-cm depth was at least 50% of available water-holding capacity (AWHC) of the profile for the fallow treatment at Lethbridge and Turin 2, and, except in some years, at Turin 1. At seeding time, there was an average of 69 mm more available water (AW) in the fallow field than in the continuous cropping field at Lethbridge and 30, 35 and 27 mm more AW in the fallow field than in the fresh stubble field of a fallow-cereal, 2-yr rotation for Lethbridge, Turin 1 and Turin 2, respectively. The overall mean precipitation conserved as soil moisture for the fallow-cereal rotation practice was 23, 29 and 23% for Lethbridge, Turin 1 and Turin 2, respectively. The significantly higher soil water content at the 90- to 120-cm depth for the fallow field than for other fields during various periods of time indicates that the soil water recharge from precipitation might be deeper in the fallow field than in continuous cropping and fresh stubble of fallow-cereal rotation fields. The deeper soil water recharge could increase the available soil moisture for crop production and it could also contribute to ground water recharge. Key words: Soil water, available water content, continuous cropping, summerfallow


2018 ◽  
Vol 11 (2) ◽  
pp. 139-146 ◽  
Author(s):  
Yi-ben Cheng ◽  
Hong-bin Zhan ◽  
Wen-bin Yang ◽  
Fang Bao

2010 ◽  
Vol 97 (7) ◽  
pp. 1063-1069 ◽  
Author(s):  
Patricio Grassini ◽  
Jinsheng You ◽  
Kenneth G. Hubbard ◽  
Kenneth G. Cassman

1995 ◽  
Vol 52 (1) ◽  
pp. 43-49 ◽  
Author(s):  
K. Reichardt ◽  
L.R. Angelocci ◽  
O.O.S. Bacchi ◽  
J.E. Pilotto

Daily rainfall variability at a local scale (1,000 ha) was studied at Piracicaba, SP, Brazil, for the period of one year (1993-1994), in order to better understand the process of soil water recharge. Coefficients of variation of daily data for ten observation points varied from 2.2 to 169.3% and the variability was independent of rain type, i.e. whether convective, frontal or of other origin. Data were not related to separation distances between observation points and it is concluded that one observation point does not represent areas as far as 1,000 to 2,500 m apart, for daily, monthly or even quarterly averages. Yearly totals for the ten observation points presented a coefficient of variation as low as 3.06%, indicating that all points can replace each other in annual terms.


1993 ◽  
Vol 73 (1) ◽  
pp. 81-91 ◽  
Author(s):  
M. C. J. Grevers ◽  
E. de Jong

The effect of subsoiling of Solonetzic and of Chernozemic soils was studied over a 5-yr period under dryland conditions and under irrigation, involving 11 farm sites, and 2 soil zones. Subsoiling reduced soil density for up to 3 yr on most of the Solonetzic soils and on one of the Chernozemic soils. Overwinter soil-water recharge in subsoiled Solonetzic soils was increased for up to 3 yr, but not in subsoiled Chernozemic soils. Under irrigated conditions, subsoiling reduced soil salinity and sodicity at one site; however, under dryland conditions soil salinity and sodicity levels remained unaltered. Crop emergence on one of the Solonetzic soils was decreased in the first year after subsoiling because of poor seedbed conditions. Subsoiling increased crop production on Solonetzic soils in the 1st, 2nd, 3rd and in the 4th years, and at one site in the 5th year. Subsoiling did not affect crop production on Chernozemic soils. Increased crop production resulted from increased soil water depletion with depth, and also from greater crop water-use efficiency. Soil loosening by subsoiling, as indicated by decreased soil bulk density of the B horizon lasted up to 3 yr, during which the largest yield increases were measured. The results suggest that subsoiling may have to be repeated every 5 yr or more. Key words: Subsoiling, amelioration, soil water, crop growth


1987 ◽  
Vol 79 (4) ◽  
pp. 661-667 ◽  
Author(s):  
Bradley S. Johnson ◽  
George R. Blake ◽  
Wallace W. Nelson

2015 ◽  
Vol 47 (2) ◽  
pp. 390-408
Author(s):  
R. Bialkowski ◽  
J. M. Buttle

Soil water recharge (R) below 1 m depth was estimated via a 1-d water balance for grasslands, hardwood stands and red pine plantations on the Oak Ridges Moraine (ORM) in southern Ontario, Canada. Annual R values (431–696 mm) were in the order of previous estimates for outcropping sands and gravels on the ORM (∼400 mm); however, they only partially supported hypothesized differences in R between land covers. Annual R was similar for grasslands and hardwood stands and exceeded that for red pine plantations. However, there were no consistent differences in R between land covers for growing or dormant seasons, due to relatively large uncertainties for R estimates as well as inter-site differences in the soil's ability to store and transmit inputs below 1 m. Nevertheless, shifts in annual R appear to have accompanied historical land cover changes from hardwood-conifer stands → agricultural fields → red pine plantations → regenerating hardwoods. Growing season R in hardwoods makes a larger contribution to total R than for other land covers, partly due to spatially focused throughfall and stemflow contributions to R. Results highlight the role of land cover differences when assessing spatial variations in R along the ORM.


1983 ◽  
Vol 75 (1) ◽  
pp. 57-60 ◽  
Author(s):  
A. Y. Hanna ◽  
P. W. Harlan ◽  
D. T. Lewis

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