+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Soil variation on steep greywacke slopes near Reefton, Western South Island



Soil variation on steep greywacke slopes near Reefton, Western South Island



Journal of the Royal Society of New Zealand 24(2): 231-242



In a steeply sloping area of 335 ha underlain by greywacke and minor argillite, and covered by mixed podocarp/beech forest, forty-one soil profiles were examined in order to investigate soil variability, Observations were made every 100 m along fixed traverse lines set at right angles to main water courses between 320 m and 620 m a.s.l. More than 2 m thicknesses of fossil screen or greywacke colluvium mantle most of the lower two-thirds of the 32 degree -38 degree slopes; however, rock is closer to the surface beneath spurs, and there are some rock outcrops forming bluffs in midslope positions. Rock underlies most ridge crests and upper slopes, which average 22 degree . Hard beech with some rata dominates on upper slopes. Red beech is increasingly dominant downslope, with the largest trees (up to 30 m high) on the lowest-altitude slopes. At soil order level, Brown Soils comprise 57% of the profiles described; other proportions are Recent Soils, 20%, Organic Soils, 14%, and Podzols, 9%. Podzols and certain subgroups of the Brown Soils indicate soil stability for about 60% of the soils and, by implication, sites described. These soils are found mainly in mid- and lower slope positions. Tree overturn and hard rock near the surface are considered the main factors influencing the maintenance of Recent Soils and some Brown Soils. The subdivision of slopes into ridges, stable intermediate steep slopes, eroded slopes and accumulation slopes was not practicable in this study area. An alternative model, dividing the area into ridgetops and a complex of colluvial and bedrock steeplands, would better encompass the observed soil variability. Comparisons with soil studies in the two other known areas where climate and other environmental factors are similar, namely the Marlborough Sounds and Mount Harata, show a similar pattern of soil development on steep slopes.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 002697034

Download citation: RISBibTeXText

DOI: 10.1080/03014223.1994.9517467


Related references

Testing a soil-landscape model for dry greywacke steeplands on three mountain ranges in the South Island, New Zealand. Australian Journal of Soil Research 40(2): 243-255, 2002

A preliminary investigation into the consequences of inadequate conservation policies on the steep slopes of the Rukiga Highlands, south-western Uganda. Proceedings of the National Workshop Soil and Water Conservation in Kenya (3): 496-508, 1989

The occurrence of allophane in two high country altitudinal soil sequences in greywacke in the Nelson/ Blenheim area, South Island, New Zealand. Pages 75 1988, 1988

Torlesse Greywacke and Haast Schist source for Pliocene conglomerates near Reefton, New Zealand. New Zealand Journal of Geology and Geophysics 44(1): 105-111, 2001

Mode of occurrence and features in the steep slopes at the foot of Rokko Mountains; steep slopes caused by the earthquake and further failure by subsequent rainfall in eastern Kobe City and Asiya City. Proceedings of the Symposium on Geo-Environments 11(Pages 373-378, 2001

Land-use effects on soil properties on the north-western slopes of New South Wales Implications for soil condition assessment. Australian Journal of Soil Research 46(4): 359-367, 2008

The steep slopes of the western loess. Science 4(86): 302, 1884

Changes of surface soil nutrients and sustainability of pastoralism on grazed hilly and steep land, South Island, New Zealand. Journal of Range Management 49(4): 361-367, 1996

Palynology of the Triassic Topfer Formation, Reefton, South Island, New Zealand. Pages 55 1979, 1979

Seasonal differences in bird counts in forests near Reefton, South Island, New Zealand. Notornis 254: 257-278, 1978

Studies on soil amendments on slopes by application of organic matter 1. variation of soil water of slopes. Bulletin of the Faculty of Agriculture Yamaguchi University (33): 33-48, 1982

Rehabilitation of deforested steep slopes on the East Coast of New Zealand's North Island. Unasylva English ed 52(207): 21-29, 2001

Soil erosion impact on soil organic carbon spatial variability on steep tropical slopes. Soil Science Society of America Journal 73.3, 2009

Soil losses on steep slopes. Annotated Bibliography, Commonwealth Bureau of Soils (SA2021): 25, 1978

Orogenic vein and disseminated gold deposits, Reefton Goldfield, South Island, New Zealand. Pages 80 2002, 2002