Climate consequences of temperate forest conversion to open pasture or silvopasture
نویسندگان
چکیده
Land use change , particularly the conversion of forest to agriculture, is an important driver climate but rarely considered a major factor in northern temperate regions. This study explored impacts clearing for agriculture northeastern United States, hypothesizing that compared managed cool-season pasture, silvopasture would moderate changes surface temperature, soil greenhouse fluxes, and carbon nutrient losses. To test this hypothesis, we conducted two land experiments, one New York other Hampshire, USA. In both locations, forests have regenerated following period clearing, intensive agricultural management farm abandonment, such secondary currently comprise ~60–80% base. measured microclimatic variables air temperature moisture, gas emissions CO 2 N O, nitrogen content. Using mixed-effects modeling framework, found near-surface temperatures were highest converted pasture plots, lowest reference areas, intermediate treatment. Soil respiration followed similar pattern, with elevated fluxes open pastures as sites. Although detected few C among treatments, observed higher stocks O not Our results suggest may offer biogeochemical “middle ground” between intact fields, retaining benefits while enabling expansion Understanding or critical better anticipate consequences potentially re-emerging uses, across US regions globally. • from moderated increases. Forest had little effect on carbon. pastures. Study sites showed divergent responses change.
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ژورنال
عنوان ژورنال: Agriculture, Ecosystems & Environment
سال: 2022
ISSN: ['0167-8809', '1873-2305']
DOI: https://doi.org/10.1016/j.agee.2022.107972