Zobrazeno 1 - 10
of 25
pro vyhledávání: '"J. B. Zwolinski"'
Publikováno v:
The Southern African Forestry Journal. 183:1-16
This study deals with a unique reconstruction of pine growth on various sites of the North East Cape Forests (NECF), thus providing information of strategic importance to the regional afforestation. The reconstruction of growth was possible in a numb
Autor:
J. B. Zwolinski
Publikováno v:
The Southern African Forestry Journal. 178:9-13
SYNOPSIS Palmer drought models are introduced as an objective measure of monthly moisture conditions and their application for forestry research is discussed. A case-study showed that Palmer Hydrological Drought Index was preferred to Palmer Drought
Publikováno v:
South African Forestry Journal. 174:1-8
SYNOPSIS In South Africa, commercial tree planting is restricted because of limited water resources in the soil. Therfore, it is important to recognise relevant soil characteristics and soil amelioration techniques to optimise water supply for best t
Autor:
J. B. Zwolinski, D. G. M. Donald
Publikováno v:
Annales des Sciences Forestières. 52:365-374
La diversite des especes, la hauteur, la couverture et la biomasse vegetale des plantations exotiques de Pinus radiata ont ete examinees en fonction des methodes de regeneration de foret en Afrique du Sud. Les traitements experimentaux comprennent 4
Publikováno v:
South African Forestry Journal. 168:7-21
Publikováno v:
South African Forestry Journal. 168:1-6
SYNOPSIS Part 4 of the series of papers concerning the regeneration of Pinus radiata deals with characteristics of the planting stock. Such studies are motivated by the necessity of evaluating different planting stock alternatives for a variety of op
Publikováno v:
South African Forestry Journal. 167:1-7
Publikováno v:
South African Forestry Journal. 167:21-25
Publikováno v:
South African Forestry Journal. 164:27-34
SYNOPSIS Young trees were damaged by winds blowing at 39 m/s speed in the southern Cape Province. The frequency and the extent of wind damage was investigated in an establishment experiment comprising four methods of soil cultivation, two levels of w
Publikováno v:
South African Forestry Journal. 163:31-35
SYNOPSIS Formosan alder (Alnus formosana) was introduced into South Africa in 1982. The species proved to be site specific. On deep, well drained but moist soils it grows fast producing timber in excess of 20 m3/ha per annum at eight years of age. Pr