The Coastal Tundra at Barrow 



19 



Vegetation 

 Typ e I . Ill 

 Land Rim 



Form 



VI 



VI 



Basin 



Rim Trougti 



Rim 



Basin 



Rim 



Trough Rim 







A 



I deciduous 

 shrub 



15 20 



Distance along Section (meters) 



25 



30 



single 



^ rosetted », erect mot , coespitose | ...,>,,. ^ bryophyte 



•I- dicotyledon Y dicotyledon dicotyledon " monocotyledon I monocotyledon 



B 



lichen 



BASIN 



RIM 



TROUGH 



Oi 

 Oe/Oi 



Oe2 



0e3/0p 



Oo/AI 



B2g 



Oa2 



Oe/Oi 



B2g 



Pergelic Cryoquept 



or 



Pergelic Cryosoprist 



^^M 



Oe2 



Diagnostic Soil Horizons, 

 Subdivision ond Process 



b = buried 

 f =frozen 



g=gleyed 



W^ CI 



I I Oi Oe Go 



Al 

 B2 



CIg 



Pergelic Cryoquept 



or 

 Pergelic Cryohemist 



Pergelic Cryoquept 

 or 

 Histic Pergelic Cryoquept 



FIGURE 1-9. Ground oblique photograph of a lov^ -centered polygon, its 

 microtopographic profile and thaw depths, and idealized soil prof iles for 

 each microtopographic unit (basin, rim, and trough). The profile and 

 thaw depths are lines established by the wooden stakes shown in the pho- 

 tograph. Progression of depth of soil thaw is for summer 1973. 



