TAILIEUCHUNG - Báo cáo lâm nghiệp: "Afforestation/reforestation of New Zealand marginal pasture lands by indigenous shrublands: the potential for Kyoto forest sinks"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài:"Afforestation/reforestation of New Zealand marginal pasture lands by indigenous shrublands: the potential for Kyoto forest sinks" | Ann. For. Sci. 62 2005 865-871 INRA EDP Sciences 2005 DOI forest 2005077 865 Original article Afforestation reforestation of New Zealand marginal pasture lands by indigenous shrublands the potential for Kyoto forest sinks Craig TROTTERa Kevin TATEa Neal SCOTTb Jacqueline TOWNSENDa Hugh WILDEa Suzanne LAMBIEa Mike MARDENa Ted PINKNEYa a Landcare Research Private Bag 11052 Palmerston North New Zealand b Woods Hole Research Center P O Box 296 Woods Hole MA USA Received 13 April 2004 accepted 7 April 2005 Abstract - New Zealand will use the afforestation reforestation A R provisions of article of the Kyoto protocol to help offset greenhouse gas emissions during the first commitment period 2008 to 2012. We assess here the potential initial C sink available from A R of marginal pasture lands by New Zealand s most common shrubland species manuka Leptospermum scoparium and kãnuka Kunzea ericoides . Plotbased mensuration shows that mean net C accumulation rates for mãnuka kãnuka shrubland are in the range to t C ha-1 yr-1 when averaged over the active growth phase of about 40 years. Estimates of the change in mineral soil C with shrubland A R of grassland suggest small losses occur although these appear to be largely offset by accumulation of C in the litter layers. Analysis shows that nationally there are about Mha of marginal pastoral land suitable for A R by indigenous shrubland or forest. This area could accumulate about Mt C yr-1 a significant offset to New Zealand s annual energy-related CO2 emissions of Mt CO2-C yr-1. An initial economic analysis of livestock farming for a region with large areas of land marginal for sustained pastoral agriculture suggests carbon farming may prove an attractive alternative land use if international prices for biomass-C reach about 10 per tonne CO2. afforestation reforestation Kyoto protocol carbon sink shrubland Résumé - Boisement reboisement des pâturages marginaux de Nouvelle-Zelande par des .

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