Changes in above- and belowground biomass in early successional tropical secondary forests after shifting cultivation in Sarawak, Malaysia

Tanaka, Kenzö; Ichie, Tomoaki; Hattori, Daisuke; Kendawang, Joseph Jawa; Sakurai, Katsutoshi; Ninomiya, Ikuo

doi:10.1016/j.foreco.2010.06.006

Cited by 66 publications

(44 citation statements)

References 47 publications

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“…Regression analysis showed that the tree carbon increase significantly with age (p≤0.01) ( Table 2). These values are comparable to those reported for natural regenerating secondary forest in this region which ranges from 4.0-59.4 tC/ha (Hashimotio et al 2000;Kenzo et al 2010) but lower compared to those reported for lowland and hill dipterocarps in Asia (Laumonier et al 2010;Lu et al 2010;Ngo et al 2013).…”

Section: Resultssupporting

confidence: 80%

Assessment of Carbon Stock in Chronosequence Rehabilitated Tropical Forest Stands in Malaysia

Kueh¹,

Majid²,

Ahmed³

et al. 2016

Journal of Forest and Environmental Science

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The loss and degradation in tropical forest region are some of the current global concern. Hence, these issues elevated the role of rehabilitated forests in providing ecological products and services. The information on the carbon stock is important in relation to global carbon and biomass use, but lacking from the tropical region. This paper reports the assessment of tree and soil carbon stock in a chronosequence rehabilitated tropical forest stands in Malaysia. The study site was at the UPM-Mitsubishi Forest Rehabilitation Project, UPMKB. 20×20 m plot was established each and assessed in 2009 at 1-, 10-and 19-year-old sites while an adjacent ±23-year-old natural regenerating secondary forest plot was established for comparison. The overall total carbon stock was in the order of 19-year-old＞±23-year-old＞ 10-year-old＞1-year-old. When forest carbon stock is low, the soil component plays an important role in the carbon storage. The forest carbon recovery is crucial to increase soil carbon stock. The variations in the carbon stock showed the different stages of the forest recovery. Species survived after 19-years of planting are potential species for carbon sequestration activities in rehabilitated forest. Human intervention in rehabilitating degraded forest areas through tree planting initiatives is crucial towards recovering the forest ecological role especially in forest carbon stock capacity.

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Section: Resultssupporting

confidence: 80%

Assessment of Carbon Stock in Chronosequence Rehabilitated Tropical Forest Stands in Malaysia

Kueh¹,

Majid²,

Ahmed³

et al. 2016

Journal of Forest and Environmental Science

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show abstract

“…Studies at nearby sites in Malaysia having similar species composition have found average carbon content close to 50% (Kenzo et al, 2010;Kenzo, pers. comm.…”

Section: Calculationsmentioning

confidence: 95%

Carbon stocks in primary and secondary tropical forests in Singapore

Ngo

Turner

Muller‐Landau

et al. 2013

Forest Ecology and Management

154

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“…A previous study by Sanchez (1976) indicated that major cations in the ash produced by slash-and-burn agriculture cause dramatic increases in exchangeable Ca, K, and Mg levels, which are followed by gradual decreases during the cropping period and/or in regenerated secondary forests, mainly through plant uptake, rather than leaching (Kendawang et al 2004. In addition, rapidly increasing aboveground biomass and nutrient stocks usually occur in tropical secondary forests during the first 10 to 20 years after degradation (Brown and Lugo 1990;Johnson et al 2001;Kenzo et al 2010). These rapid accumulations in aboveground matter may be achieved by rapid nutrient absorption from the soil.…”

Section: Discussion Forest Structural Traits and Soil Conditions Of Tmentioning

confidence: 99%

Effects of environmental factors on growth and mortality ofParashorea macrophylla(Dipterocarpaceae) planted on slopes and valleys in a degraded tropical secondary forest in Sarawak, Malaysia

Hattori

Tanaka

Yamauchi

et al. 2013

Soil Science and Plant Nutrition

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Enrichment planting with climax trees such as dipterocarps is required to rehabilitate degraded tropical forests in Southeast Asia, because these forests have been damaged by various anthropogenic activities. Severely degraded tropical secondary forests are the most important targets for enrichment planting in the region, because secondary forest trees potentially provide moderate conditions for planted seedlings by preventing strong sunlight and high temperatures. In an enrichment planting site located in Sarawak, Malaysia, we explored how variation in secondary forest structure (biomass and stand density) and soil (nutrient and water) conditions influenced the mortality and growth rates of planted dipterocarp seedlings (Parashorea macrophylla, Wyatt-Sm. ex P.S. Ashton) over the period from 2000-2007. Experimental plots were set up on different topographical features (slopes and valleys). Using the data collected, we demonstrated the ways in which environmental factors, such as soil nitrogen content, relate to climax tree seedling growth and mortality in degraded tropical secondary forests dominated by the genera Macaranga, Ficus, and Glochidion. Stand density and total aboveground biomass of secondary forest trees were significantly lower in the valley plots than on the slopes, whereas soil total nitrogen and water contents were significantly higher in valley plots. Over seven years, the total biomass of trees increased, whereas the density of secondary forest trees decreased in all plots. Nutrient stocks (nitrogen, phosphorus, potassium, calcium, and magnesium) in the soil (0-5 cm) also decreased over seven years in all plots. Height, diameter, and mortality of planted seedlings were higher in the valley plots than on slopes. Multiple stepwise regression demonstrated significant positive effects of total soil nitrogen and water content on the relative growth rate of seedlings over seven years. There were no significant relationships between seedling mortality and any of the environmental factors measured, including soil conditions. We conclude that (1) seedling growth was enhanced by soil total nitrogen rather than by available phosphorus or potassium, and (2) planted seedlings grew faster and died more often in the valley plots than on the slopes.

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Changes in above- and belowground biomass in early successional tropical secondary forests after shifting cultivation in Sarawak, Malaysia

Cited by 66 publications

References 47 publications

Assessment of Carbon Stock in Chronosequence Rehabilitated Tropical Forest Stands in Malaysia

Assessment of Carbon Stock in Chronosequence Rehabilitated Tropical Forest Stands in Malaysia

Carbon stocks in primary and secondary tropical forests in Singapore

Effects of environmental factors on growth and mortality ofParashorea macrophylla(Dipterocarpaceae) planted on slopes and valleys in a degraded tropical secondary forest in Sarawak, Malaysia

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