Rehabilitating degraded forest land in central Vietnam with mixed native species plantings

McNamara, Sean; Tinh, Duong Viet; Erskine, Peter D.; Lamb, David; Yates, David J.; Brown, Sharon

doi:10.1016/j.foreco.2006.05.033

Cited by 87 publications

(42 citation statements)

References 7 publications

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“…In their study, decomposed litter was gradually incorporated into the soil, a technique that showed great potential to transform degraded lands into functioning ecosystems as carbon is absorbed by the soil. In highly degraded lands, McNamara et al (2006) found that the use of Acacia auriculiformis supported the re-establishment of native species by eradicating competing grasses, and improving soil conditions, a process noted by other authors (c.f., Parrotta, 1992Parrotta, , 1999Parrotta et al, 1997;Carnus et al, 2006;Brockerhoff et al, 2008).…”

Section: Introductionmentioning

confidence: 63%

Soil dynamics and carbon stocks 10 years after restoration of degraded land using Atlantic Forest tree species

et al. 2011

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Brazil's Atlantic Forest ecosystem has been greatly affected by land use changes, with only 11.26% of its original vegetation cover remaining. Currently, Atlantic Forest restoration is receiving increasing attention because of its potential for carbon sequestration and the important role of soil carbon in the global carbon balance. Soil organic matter is also essential for physical, chemical and biological components of soil fertility and forest sustainability. This study evaluated the potential for soil recovery in contrasting restoration models using indigenous Atlantic Forest tree species ten years after their establishment. The study site is located in Botucatu municipality, São Paulo State-Brazil, in a loamy dystrophic Red-Yellow Argisol site (Typic Hapludult). Four treatments were compared: i) Control (Spontaneous Restoration); ii) Low Diversity (five fast-growing tree species established by direct seeding); iii) High Diversity (mixed plantings of 41 species established with seedlings) and; iv) Native Forest (well conserved neighboring forest fragment). The following soil properties were evaluated: (1) physical-texture, density and porosity; (2) chemical-C, N, P, S, K, Ca, Mg, Al and pH; (3) biological-microbial biomass. Litter nutrient concentrations (P, S, K, Ca and Mg) and C and N litter stocks were determined. Within ten years the litter C and N stocks of the Low Diversity treatment area were higher than Control and similar to those in both the High Diversity treatment and the Native Forest. Soil C stocks increased through time for both models and in the Control plots, but remained highest in the Native Forest. The methods of restoration were shown to have different effects on soil dynamics, mainly on chemical properties. These results show that, at least in the short-term, changes in soil properties are more rapid in a less complex system like the Low Diversity model than in the a High Species Diversity model. For both mixed plantation systems, carbon soil cycling can be reestablished, resulting in increases in carbon stocks in both soil and litter.Key words: restoration models; recovery of degraded land; legume trees; physical properties; chemical properties; microbial biomass. Resumen Dinámica del suelo y estoque de carbono después de diez años de la restauración de tierras degradadas usando especies arbóreas del Bosque AtlánticoEl ecosistema forestal Atlántico de Brasil ha sido fuertemente afectado por los cambios en el uso de la tierra, restando solo 11,26% de su vegetación original. En la actualidad, la restauración forestal atlántica ha recibido creciente atención debido a su potencial para el secuestro de carbono y el importante papel del carbono del suelo en el equilibrio global del carbono. La materia orgánica del suelo es también esencial para el desarrollo físico, químico y biológico de la fertilidad del suelo y la sustentabilidad de los bosques. Este estudio evaluó el potencial de recuperación del suelo diez años después de su establecimiento en modelos contrastantes de restauració...

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Section: Introductionmentioning

confidence: 63%

Soil dynamics and carbon stocks 10 years after restoration of degraded land using Atlantic Forest tree species

et al. 2011

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“…Several researchers have proved that in order to overcome degraded forest land into more productive areas, plantation forest or rehabilitation activities areconsiderate an important tool from a global perspective in terms of wood and ecosystem resources and eco-friendly environment services (Arifin et al, 2008a;2008b;Cole et al, 1996;MacNamara et al, 2006). In addition, forest rehabilitation also attempts to return the forest to a stable and productive condition in terms of soil fertility status, but not necessarily the original diversity, structure and function.…”

Section: Introductionmentioning

confidence: 99%

Assessing Soil Fertility Status of Rehabilitated Degraded Tropical Rainforest

Jamaluddin

Abdu

Hamid

et al. 2013

American Journal of Environmental Sciences

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An assessment of forest rehabilitation program in relation to soil fertility status by using soil indices could provide fundamental information on soil suitability for species preferences and improve the effective technique for future rehabilitation program in tropical rainforests. This study was conducted in order to characterize the soil properties and identifying the soil fertility status of rehabilitated and secondary forests. Soil samples were collected in year 2009 at rehabilitation forests (20 years after planting) and secondary forest of Nirwana Forest Reserve, Universiti Putra Malaysia (UPM) Bintulu Campus, Sarawak, Malaysia. The rehabilitation plots were planted with mixed dipterocarp and non-dipterocarp species since 1991. Prior to conversion of the areas into various land use types, the rehabilitation and secondary forests areas were considered as natural forests and subsequently subjected to forest logging with Selective Management System (SMS) in 1980s.The plot size for each site was 20×20 m for 18 experimental sites (at different ages after planting) were established, followed by soil sampling at 0-15 cm and 15-30 cm depth randomly using soil auger. Standard soil analysis for physical and chemical properties was used to analyze the soil samples. The soil fertility status was evaluated using two indices, namely Soil Fertility Index (SFI) and Soil Evaluation Factor (SEF) for both rehabilitated and secondary forests. The results showed that there were significant differences (p<0.05) in pH (water and KCl), exchangeable Mg, Na, Al and ammonium and granule composition (clay, silt and sand) between depths. The PCA result of 70% total variability (OM, TOC, TC and CEC) score in PC1 shows positive relationship, explaining nutrients in the soil stored in the organic matter in the surface soils. The correlation analysis indicated that there were positive relationship (p<0.05) between OM and TC, CEC and exchangeable Al for surface soils. We found that the selected physico-chemical properties had a significant differences based on the age of planting of rehabilitated forests. For subsurface soils, correlation between exchangeable Al and OM and CEC shows strong positive relationship, indicating that negative charge derived from organic materials plays important roles for cation retention capacity. The SFI and SEF for rehabilitation forests showed higher value as compared to secondary forests, indicating forest rehabilitation had improved the soil fertility status of degraded forestland. In conclusion, both rehabilitated and secondary forests have significant differences based on the selected physical and chemical properties. Moreover, the soil fertility status at rehabilitated plots was higher than secondary forest, which is proved that the forest rehabilitation technique is a suitable planting technique for rehabilitating and replenishing soil fertility status of abandoned degraded shifting cultivation land.

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“…This method is potentially useful; not only for timber production but also to rehabilitate degraded land, as McNamara et al 16 and Sovu et al 32 have demonstrated in Indochina.…”

Section: Species Selection and Suitable Forest Managementmentioning

confidence: 98%

“…In most cases, fast-growing plantations were logged according to a set pattern (random selection, stripes, gaps); targeting better light conditions for dipterocarp seedlings. Planting dipterocarp trees in secondary or degraded forests, called "enrichment planting," has also been trialed in South-east Asia 7,16,17,29,33 . These strategies appear successful, to the extent that some dipterocarp tree species (e.g.…”

Section: Introductionmentioning

confidence: 99%

Growth Performance of Four Dipterocarp Species Planted in a Leucaena leucocephala Plantation and in an Open Site on Degraded Land under a Tropical Monsoon Climate

Sakai

Visaratana

Vacharangkura

et al. 2014

JARQ

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Rehabilitating degraded forest land in central Vietnam with mixed native species plantings

Cited by 87 publications

References 7 publications

Soil dynamics and carbon stocks 10 years after restoration of degraded land using Atlantic Forest tree species

Soil dynamics and carbon stocks 10 years after restoration of degraded land using Atlantic Forest tree species

Assessing Soil Fertility Status of Rehabilitated Degraded Tropical Rainforest

Growth Performance of Four Dipterocarp Species Planted in a Leucaena leucocephala Plantation and in an Open Site on Degraded Land under a Tropical Monsoon Climate

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