Sammanfattning

To understand and predict the dynamics and productivity of the world's tropical rainforests after logging is a major challenge for ecologists and forest managers. Realistic forest-dynamics models for this biome are largely lacking. Using linear mixed models, we analyse basal area development for the commercially valuable tree species of dipterocarps and the fast-growing pioneer Macaranga spp., following two selective logging methods; supervised logging (SL) and conventional logging (CL) combined with- or without pre-harvest climber cutting (SLC and SL, and CLC and CL, respectively). After logging there was an initial period of about five years before recovery started. During the 18-year study period, the average stand basal area growth rates of the dipterocarp group in the SLC treatment was double that in the CL treatment, revealing a faster recovery. Eighteen years after logging, SL and SLC treatments recovered 93% and 84%, respectively, of the initial standing dipterocarp basal area, compared to 73% and 72% recovery for the CL and CLC treatments. SLC treatments reduced the overall establishment of pioneer species (Macaranga spp.) by about 45% in contrast to CL and CLC treatments. Our study provides a framework for evaluating and comparing growth rates in tropical forests for different logging methods. The results suggest that a combination of directional felling, pre-aligned skid trails and pre-harvest climber cutting can improve future yields in tropical rainforests.

Nyckelord

Basal area growth; Climber cutting; Dipterocarpaceae; LMM; Reduced impact logging; Sustainable forest management

Publicerad i

Forest Ecology and Management
2019, Volym: 437, sidor: 372-379

SLU författare

• Lussetti, Daniel

  • Institutionen för skogens ekologi och skötsel, Sveriges lantbruksuniversitet
    

• Ranneby, Bo

  • Institutionen för skogsekonomi, Sveriges lantbruksuniversitet
    

• Ilstedt, Ulrik

  • Institutionen för skogens ekologi och skötsel, Sveriges lantbruksuniversitet
    

• Falck, Jan

  • Institutionen för skogens ekologi och skötsel, Sveriges lantbruksuniversitet
    

• Karlsson, Anders

  • Institutionen för skogens ekologi och skötsel, Sveriges lantbruksuniversitet
    

Globala målen

SDG15 Skydda, återställa och främja ett hållbart nyttjande av landbaserade ekosystem, hållbart bruka skogar, bekämpa ökenspridning, hejda och vrida tillbaka markförstöringen samt hejda förlusten av biologisk mångfald


UKÄ forskningsämne

Skogsvetenskap


Publikationens identifierare

DOI: https://doi.org/10.1016/j.foreco.2019.01.044

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/98575