CGRG Bibliography of Canadian Geomorphology
Search Results

---

Author : Ballard, T.M.
Date : 1972
Title : Subalpine soil temperature regimes in southwestern British Columbia
Publication : Arctic and Alpine Research
Issue : 4(2):
Page(s) : 139-146.



---

Abstract

Subalpine soil temperature regimes were compared for bare ground (BG), evergreen shrub (ES), herbaceous meadow (HM), single tree (ST), and tree clump (TC) sites. Through most of the snow-free season, soil temperatures at -60 cm were BG > ES HM > ST > TC. Relative diurnal temperature amplitudes (percent of BG value) at -5 cm averaged ES, 43; TC, 14; HM, 84 (early summer), 52 (midsummer), 36 (late summer), 45 (fall). Surface temperatures potentially lethal for tree seedlings ( 49 C) occurred on HM in early summer. Nonperiodic soil cooling was associated with rainy periods. Fourier analysis and heat conduction models were used to evaluate damping depths, thermal diffusivities, profile homogeneity, and temperature regimes. The equation describing sinusoidal temperature fluctuations in a homogeneous soil proved to be a useful basic model.

---

Bibliography of Canadian Geomorphology