: An ecosystem services provider?
Agroforestry Systems(2015)
摘要
, a tree native to southern Mexico’s tropical dry forest, belongs to a genus that is popular worldwide as a component of agroforestry systems. However, despite appreciation by local communities, this species is poorly studied and has not been evaluated as a multipurpose tree in its native range. This work evaluated whether has the qualities necessary to serve as a multipurpose tree for agroforestry systems and a provider of ecosystem services in its original distribution, specifically, in soil nutrient amelioration and recovery, fuelwood production, and provision of quality livestock fodder. Leaves contained high values of nitrogen and calcium, and litter decomposition was relatively rapid (~50 % of mass lost over first 6 months). Despite somewhat low wood density, this species’ high calorific value and low ash and moisture contents yielded a relatively high firewood value index (FVI = 2,594.65), suggesting high potential as a fuelwood. In terms of fodder quality, protein and digestible fiber contents were high and in vitro digestibility was adequate, as was condensed tannin concentration. It is important to mention, however, that showed higher-than-ideal contents of lignin, both in fresh leaves and in litter. However, this apparently does not drastically reduce overall quality (i.e. decomposition rate and in vitro digestibility), and appropriate management techniques such as composting can mitigate its effects. Given its potential for providing a variety of ecosystem services, we recommend that be installed in agroforestry systems in its native range to evaluate its effect on crop productivity.
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关键词
Ecosystem services,Fuelwood,Fodder,Leaf litter,Alley cropping,Leucaena macrophylla
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