scholarly journals Analysis of Natural Wind Disturbance Regimes Resulting from Typhoons Using Numerical Airflow Modelling and GIS: A Case Study in Sugi (Cryptomeria japonica) and Hinoki (Chamaecyparis obtusa) Plantation Forests

FORMATH ◽  
2011 ◽  
Vol 10 (0) ◽  
pp. 87-103
Author(s):  
S. Tsuyuki ◽  
T. Nakajima ◽  
T. Tatsuhara ◽  
N. Shiraishi
2011 ◽  
Vol 41 (5) ◽  
pp. 986-993 ◽  
Author(s):  
Carol A. Rolando ◽  
Michael S. Watt ◽  
Jerzy A. Zabkiewicz

Plantation forests certified by the Forest Stewardship Council have restrictions on herbicide use. Since certified plantations are dependant on herbicides for cost-effective vegetation management, compliance requires a shift from current chemical practices. Using New Zealand plantation forests as a case study, discounted cash flow analyses were used to estimate the cost of certification-compliant vegetation control regimes compared with current non-compliant methods. We examined methods that (i) reduce the quantity of herbicides by using spot control and (ii) avoid the use of herbicides by using weed mats, manual, and mechanical control. Cost analyses were undertaken for low-, medium-, and high-productivity sites. The internal rate of return of the non-compliant regime was between 5% and 5.8% across the productivity range. Spot control was cheaper than current non-compliant practice. However, spot control is limited by site suitability and the availability of labour. Non-chemical control methods were expensive relative to other regimes. Reductions in the internal rate of return varied across low- and high-productivity sites between 0.8% and 0.5% for manual control, 1.3% and 0.8% for mechanical control, and 1.7% and 1.0% for weed mats. Meeting the goals of certification while retaining cost-effective vegetation control presents a challenge to the plantation forestry sector.


CATENA ◽  
2021 ◽  
Vol 200 ◽  
pp. 105149
Author(s):  
Serajis Salekin ◽  
Mark Bloomberg ◽  
Justin Morgenroth ◽  
Dean F. Meason ◽  
Euan G. Mason

2017 ◽  
Vol 399 ◽  
pp. 197-205 ◽  
Author(s):  
Peter Jaloviar ◽  
Milan Saniga ◽  
Stanislav Kucbel ◽  
Ján Pittner ◽  
Jaroslav Vencurik ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document