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ArticleNew findings on loblolly pine plantations from long-term experimental field studies
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.Pine plantations in the southern US have been among the most intensively managed forests in the world. Their productivity has been enhanced by intensive silvicultural treatments over the past 60 years, and our knowledge about their treatment response has been expanded through long-term large-scale experimental studies. The analysis of nine long-term loblolly pine (Pinus taeda L.) field trials resulted in several new findings. For loblolly pine in the southern US, there exist maximum productivity and maximum response to silvicultural practices. The maximum response was inversely proportional to the base site quality. The maximum stand basal area (BA) and maximum stand density index (SDI) were redefined for individual stands. The average maximum stand BA and maximum SDI were 46.2 m2 ha-1 and 1002 tph, respectively, and both showed significant variation (30.2– 61.7 m2 ha-1 and 600–1410 tph, respectively). Stand aboveground net primary production (ANPP) generally increased with increasing site quality, due to increased stand foliage biomass in the early stage, and mainly due to increased growth efficiency in the late stages of stand development. More intensive silvicultural treatments increased foliage biomass, thus increased ANPP at early ages; thereafter silvicultural intensity did not affect foliage biomass, ANPP, and growth efficiency. The trend of early age increases in both foliage biomass and ANPP resulting from increased planting density did not hold true with stand development. Keywords: pine plantation; maximum stand density index; maximum stand basal area; maximum response; intensive management ID: 3606017 -
Book (stand-alone)The role of local institutions in reducing vulnerability to natural disasters and long-term sustainable livelihood development in high risk areas: Vietnam case study 2003
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No results found.This case study on the role of local level institutions in reducing vulnerability to recurrent natural disasters and in sustainable livelihoods development in high risk areas is written for the Food and Agriculture Organization (FAO) to contribute to the understanding of the role of local institutions and organizations in the design and implementation of disaster risk management strategies, as well as the role of local authorities in building community social capital for disaster prevention and preparedness. This understanding will provide insight and guidance on how disaster risk management may be integrated into development strategies. -
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