1 O. DRYLANDS

  

_ ’ 91%. .v “15
54. PORT LINCOLN. SA. AUSTRALIA.

Sand dune on hard pavement absorbs water and grows larger trees;

the range is in fair condition. Sessile trees prevent sand erosion or
trap sand on dune crests and sides.

56. NEAR
FLINDERS, SA.
AUSTRALIA.
BARRY PILTZ gathers
sheets of guano trom
below tree roosts
beside a dryland
. dam—pigeons and
parrots visit for water
and enrich area with

guano, below roost
, trees.

 

      

 

 

0‘

55. POVERTY FLAT. CEDUNA, SA, AUSTRALIA.
Raised beds, sunken paths, pertorated pipe irrigation, mulch. sulphur.
and bentonlte, combine to produce a rich organic garden on an eroded
sandy soil site (water 1,100 ppm salt). Aboriginal students taught by
PETER BENNETT produce excellent crops in desperate soil conditions.

 

57. NEAR OODNADATTA. SA, AUSTRALIA,

Hard bank (on skyline) constricts flood water to create a scour hole in
river sand beds. Such effects can be created.

 

58. ALICE SPRINGS. CENTRAL AUSTRALIA,

Gabions—rock—tilled wire basket structures—stabilise a tloodway near
AIICE springs reducing flood flow. and silt burden in the stream.

59. CHARIKOT. NEPAL
Gabions stabilise this steep hillsme gully on the road to Charikot. A
Swiss design.