Effects of Enrichment Planting with Five Native Species and Different Plantation Treatments on Seedling Growth Characteristics at Logged-over Forest in Lao PDR

Phongoudome, Chanhsamone; Sawathvong, Silavanh; Woo, Su Young; Ho, Wai Mun; Park, Yeong-Dae

doi:10.5532/kjafm.2012.14.2.045

Cited by 2 publications

(2 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Restoration success in monoculture plantations has been assessed using ecological variables such as growth performance of planted species (Phongoudome et al 2015, Teuscher et al 2016) and natural regeneration after restoration efforts (Medawatte et al 2014). Although there were many records of natural regeneration in Pine plantations in the tropics, such studies were lacking for silviculturally managed Pine plantations.…”

Section: Introductionmentioning

confidence: 99%

Restoration Success Evaluation of a Thinned and Enriched Pine Plantation in Sri Lanka

Jayawardhane¹,

Gunaratne²

2020

JTFS

View full text Add to dashboard Cite

Enrichment of monoculture plantations with broad-leaved species convert poorly managed exotic plantations into mixed species woodlands with enhanced ecosystem services. However, the effect of enrichment planting on the recruitment of plant diversity is poorly understood. This study aims to investigate the effect of enrichment planting in an eleven-year-old restored Pine (Pinus caribaea Morelet) plantation (RP) and a 25-30-year-old unrestored Pine plantation (UP) in Hantana, Sri Lanka. All naturally regenerated woody species were tagged, identified, and counted. The height and the diameter at breast height were measured. Nearly four times more woody species emerged from RP than UP. However, majority of species in both RP and UP were represented by the exotic invasive tree species Alstonia macrophylla Wall. ex G. Don. The mean density of seedlings of woody species was higher in RP than UP. The Shannon-Wiener diversity index was higher in RP than UP for all different life stages. Endemics were only recorded in RP. Since improved plantation structure and higher diversity was recorded in RP than UP, thinning followed by enrichment planting can be used to restore monoculture Pine plantation into mixed species plantations.

show abstract

Section: Introductionmentioning

confidence: 99%

Restoration Success Evaluation of a Thinned and Enriched Pine Plantation in Sri Lanka

Jayawardhane¹,

Gunaratne²

2020

JTFS

View full text Add to dashboard Cite

show abstract

“…Previous studies that have assessed the efficacy of enrichment planting in tropical forests have mostly relied on short-term data, such as only 2 years after planting in Indonesia [20], 1 year in Mexico [21], 4 or 5 years in the Amazon [17,22], 4 years in Vietnam [11], 7 years in Argentina [19], and 7 years in Laos [23]. Hence, there have been few studies assessing the survival and growth of enrichment plantings in the longer term.…”

Section: Introductionmentioning

confidence: 99%

The Long-Term Survival and Growth of Enrichment Plantings in Logged Tropical Rainforest in North Queensland, Australia

Quang

Baynes

Herbohn

et al. 2020

Forests

View full text Add to dashboard Cite

Enrichment planting is often suggested as a means of enhancing the productivity of logged rainforest. However, little is known about the long-term survival and growth of these trees. In this study, we used historical data from enrichment planting trials ranging from 15 to 32 years old to examine the survival and growth of 16 tree species across different sites in north Queensland, Australia. The results complement and extend current knowledge on the potential role of enrichment planting from a production perspective. A key finding was that the initial level of post-logging overwood did not appear to affect the immediate survival of enrichment plantings, but in the longer term (up to 30 years) survival decreased as post-logging overwood and regrowth increased. This suggests that removal of overwood should take place at the time of enrichment planting. A further key finding was that despite regular tending to remove vegetation adjacent to the plantings, competition from saplings and trees that were situated outside the tended area emerged as a major source of competition in some plots. By implication, the success of enrichment planting may depend on removal of competition from the entire logged area, not just adjacent to enrichment plantings. Results between individual species and trials varied widely. The best development of Flindersia brayleyana resulted in a mean tree diameter of 32.5 cm at age 22 for the 100 tallest trees per hectare. Although Eucalyptus grandis, Eucalyptus microcorys, and Eucalyptus pilularis all failed—as expected, because they do not normally grow in rainforest—Corymbia torelliana, Cardwellia sublimis, Araucaria bidwillii, Khaya senegalensis, Flindersia amboinensis, and Swietenia macrophylla also failed although they grow naturally in similar sites. In other trials, tree height and basal area growth were often poor. For example, Khaya ivorensis grew to a basal area of only 1.3 m2/ha and a mean height of 7.7 m at age 10, and Flindersia ifflaiana only grew to a basal area of 0.7 m2/ha and a height of 7.9 m, also at age 10. Overall, these results emphasise the necessity of site–species matching before enrichment planting begins and the necessity of post-planting monitoring and remedial tending.

show abstract

Effects of Enrichment Planting with Five Native Species and Different Plantation Treatments on Seedling Growth Characteristics at Logged-over Forest in Lao PDR

Cited by 2 publications

References 23 publications

Restoration Success Evaluation of a Thinned and Enriched Pine Plantation in Sri Lanka

Restoration Success Evaluation of a Thinned and Enriched Pine Plantation in Sri Lanka

The Long-Term Survival and Growth of Enrichment Plantings in Logged Tropical Rainforest in North Queensland, Australia

Contact Info

Product

Resources

About