Litter synamics in short-rotation high density tree plantations in an arid region of India

Toky, O. P.; Singh, Virendra

doi:10.1016/0167-8809(93)90064-v

Cited by 31 publications

(11 citation statements)

References 24 publications

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“…This study strongly supports the hypothesis that the high nutrient demands from the soil in the single-species plantations leads to nutrient depletion of soil, compared to the natural forests. Species with the low nutrient accumulation in their tissues are suited to conserve the amount of nutrients in soil and may replenish soil fertility in the long term (Toky and Singh 1993;Stanley and Montagnini 1999). These results are also consistent with previous reports that nutrient uptake, soil nutrient extraction, and nutrient accumulation in the biomass of Eucalyptus plantations were higher than that in native forests in India (Hunter 2001;Lodhiyal and Lodhiyal 2003), and that this species had a higher demand for phosphorus than Albizia facaltaria in Australia (Binkley et al 2000).…”

Section: Discussionsupporting

confidence: 91%

Nutrient relocation, hydrological functions, and soil chemistry in plantations as compared to natural forests in central Yunnan, China

Hou

Duan

Tang

et al. 2009

Ecological Research

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Nutrient relocation, hydrological functions, and soil chemistry in plantations as compared to natural forests in central Yunnan, China Abstract The relocation of nutrients among dominant plant species, along with hydrological functions and soil chemistry in five plant communities, including Eucalyptus plantation, Pinus plantation, shrubland, semi-natural, and natural secondary forests were investigated in central Yunnan, China. The nutrient P, N, and K accumulation in above-ground biomass of Eucalyptus smithii (stems, barks, branches, and leaves) were the highest, followed by Pinus yunnanensis of both the Pinus plantation and the semi-natural forest. The nutrient retranslocation efficiency (NRE) of E. smithii was the highest for nutrient P, N, and K with values of 56, 66, and 67%, respectively, among the dominant plant species of the five plant communities, while the NRE of P. yunnanensis in Pinus plantation had the second highest value of NRE for nutrient N. The nutrient content (available P, N, and soil organic matter) in the upper two soil layers under Eucalyptus and Pinus plantations was correspondingly found to be lower than that of the other forests. Moreover, under the Eucalyptus and Pinus plantations, surface runoff, soil erosion, and nutrient loss were more serious, and the water storage of litterfall and canopy interception were significantly lower than that in the other plant communities. Accordingly, we suggest that single-species plantations cannot present the same ecological benefits as natural forests, because of their simple, uniform structures, and the characteristics of the dominant plant species.

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Section: Discussionsupporting

confidence: 91%

Nutrient relocation, hydrological functions, and soil chemistry in plantations as compared to natural forests in central Yunnan, China

Hou

Duan

Tang

et al. 2009

Ecological Research

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“…The plausible explanation is that potassium being a non-structural element and highly mobile in the plant, is easily lost by leaching. The release pattern agrees with the review on potassium dynamics of decaying litter given by different authors (Stohlgren 1988;Toky and Singh 1993).…”

Section: Nutrient Dynamics In Decomposing Littersupporting

confidence: 90%

Litter dynamics of six multipurpose trees in a homegarden in Southern Kerala, India

Isaac

Nair

2006

Agroforest Syst

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Multipurpose trees, the integral components of homegardens, contribute significantly to the closed nutrient cycling processes and sustainability of the ecosystem. Although, the litter production and probable nutrient returns via litter in homegardens have been documented, quantification and characterization of the decomposition and bioelement release from the litter have received relatively little scientific attention. The objective of the present study is to explore the litter dynamics of six locally important multipurpose trees (Mangifera indica L., Artocarpus heterophyllus Lamk., Anacardium occidentale L., Ailanthus triphysa Dennst., Artocarpus hirsutus L. and Swietenia macrophylla L.), in an agroforestry homegarden in Southern Kerala, India. Litterfall and nutrient additions in the six species ranged from 383 to 868 g m À2 yr À1 , nitrogen, 6.4 to 8.8, phosphorus, 0.17 to 0.42 and potassium, 1.1 to 2.8 g m À2 yr À1 . The annual litter output in the homegarden was 425 kg with A. hirsutus, M. indica, A. heterophyllus and A. occidentale recording significantly higher litter and nutrient additions. Leaf litter decay studies revealed A. heterophyllus and A. occidentale to be the most labile litter species and S. macrophylla the most recalcitrant. The decay rate coefficients varied significantly among the species. Foliage decomposition rates related to the initial chemical composition of the litter revealed best correlation with lignin. NPK release was almost complete by the end of decay in all species inspite of the initial phases of accumulation observed for nitrogen and phosphorus. Two-way analysis of variance test revealed significant differences in the contents of the three elements as a function of species and time elapsed. Macronutrients were released in the order K > N/P. The higher rates of decay and nutrient turnover in M. indica, A. heterophyllus and A. occidentale foliage indicated the potential of using these species' litter as nutrient inputs in agriculture while A. triphysa, A. hirsutus and S. macrophylla perform better as organic mulches taking a longer time for decay and hence nutrient release.

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“…Leaching is believed to be the major pathway of release for potassium, which goes rather fast during the first several months and then slows down in the later months. The pattern of potassium release in this study agrees with the reviews on potassium dynamics in decaying litter given by other authors (Toky and Singh 1993;Isaac and Nair 2006).…”

Section: Discussionsupporting

confidence: 92%

Decomposition and nutrient release of four potential mulching materials for poplar plantations on upland sites

Fang

Xie

2008

Agroforest Syst

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The application of organic residues and the release dynamics of nutrients during decomposition may be crucial to improving poplar growth in upland areas. Field experiments were conducted in Guizhou Province, southwestern China, to determine differences in biomass decomposition of four potential mulching materials in one-year-old poplar plantations. Results showed the initial total content of N, P, K, Ca and Mg in the mulches ranged from 30.0 to 35.0 g/kg and was significantly greater in Quercus fabri, Imperata cylindrica var. major and Pteridium aquilinum var. latiuscukum than in Coriaria nepalensis. The weight loss pattern of these four species during decomposition could be best described by a double exponential decay model, and monthly decay rate coefficients (k) were in the order Q. fabri [C. nepalensis[I. cylindrica[P. aquilinum over a one-year period. Total nutrient (N, P and K) release of the four mulching materials ranged from 74.2 to 90.8% of the initial content after one year of decomposition, while nutrients were released in the order K [ P[N. Nutrient release was fastest in C. nepalensis followed by Q. fabri, I. cylindrica, and slowest in P. aquilinum. Thus, taking into account initial nutrient content, nutrient additions and decay rates, the sprouts of woody species (Q. fabri and C. nepalensis) with massive foliage proved to be more important as nitrogen sources than the grass or fern.

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Litter synamics in short-rotation high density tree plantations in an arid region of India

Cited by 31 publications

References 24 publications

Nutrient relocation, hydrological functions, and soil chemistry in plantations as compared to natural forests in central Yunnan, China

Nutrient relocation, hydrological functions, and soil chemistry in plantations as compared to natural forests in central Yunnan, China

Litter dynamics of six multipurpose trees in a homegarden in Southern Kerala, India

Decomposition and nutrient release of four potential mulching materials for poplar plantations on upland sites

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