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作者

Alisen E. Downey;Peter M. Groffman;Gisselle A. Mejía;Elizabeth M. Cook;Sanpisa Sritrairat;Richard Karty;Matthew I. Palmer;Timon McPhearson

来源

URBAN FORESTRY & URBAN GREENING,Vol.65,Issue1,Article 127342

语言

英文

关键字

Carbon storage;Cities;MillionTreesNYC;Urban forest management;Urban forest restoration

作者单位

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carbon sequestration in urban afforestation sites in New York City","usesAbstractUrl":true,"renderingMode":"Abstract","isAbstract":true,"isContentVisible":false,"ajaxLinks":{"referredToBy":true,"toc":true,"recommendations":true,"citingArticles":true,"authorMetadata":true},"eligibleForUniversalPdf":true},"authors":{"content":[{"#name":"author-group","$":{"id":"aug0005"},"$$":[{"#name":"author","$":{"id":"aut0005","author-id":"S1618866721003691-70484c65d9f266b89d1158d5ccd4a77d"},"$$":[{"#name":"given-name","_":"Alisen E.;Department of Earth and Environmental Sciences, CUNY-Brooklyn College, 2900 Bedford Ave, Brooklyn, NY, 11210, USA;Advanced Science Research Center, CUNY-The Graduate Center, 85 St Nicholas Terrace, New York, NY, 10031, USA;Department of Earth and Environmental Sciences, CUNY-The Graduate Center, 365 5th Ave, New York, NY, 10016, USA;Department of Environmental Science, Barnard College, 3009 Broadway, New York, NY, 10027, USA;Urban Systems Lab, The New School, 79 5th Ave #16, New York, NY, 10003, USA;Bund für Umwelt und Naturschutz Deutschland / Friends of the Earth Germany, Crellestrasse 35, 10827, Berlin, Germany;Department of Ecology, Evolution and Environmental Biology, Columbia University, 1200 Amsterdam Ave., MC 5557, New York, NY, 10027, USA;Cary Institute of Ecosystem Studies, 2801 Sharon Turnpike, Millbrook, NY, 12545, USA;Stockholm Resilience Centre, Stockholm University, Kräftriket 2B, 106 91, Stockholm, Sweden;Department of Earth and Environmental Sciences, CUNY-Brooklyn College, 2900 Bedford Ave, Brooklyn, NY, 11210, USA;Advanced Science Research Center, CUNY-The Graduate Center, 85 St Nicholas Terrace, New York, NY, 10031, USA;Department of Earth and Environmental Sciences, CUNY-The Graduate Center, 365 5th Ave, New York, NY, 10016, USA;Department of Environmental Science, Barnard College, 3009 Broadway, New York, NY, 10027, USA;Urban Systems Lab, The New School, 79 5th Ave #16, New York, NY, 10003, USA;Bund für Umwelt und Naturschutz Deutschland / Friends of the Earth Germany, Crellestrasse 35, 10827, Berlin, Germany;Department of Ecology, Evolution and Environmental Biology, Columbia University, 1200 Amsterdam Ave., MC 5557, New York, NY, 10027, USA;Cary Institute of Ecosystem Studies, 2801 Sharon Turnpike, Millbrook, NY, 12545, USA;Stockholm Resilience Centre, Stockholm University, Kräftriket 2B, 106 91, Stockholm, Sweden

摘要

There is great interest in the ability of afforestation programs to sequester carbon, improve soil health, and provide other ecological benefits to urban areas. However, the capacity of urban soils to support successful afforestation and sequester carbon is poorly understood. This study quantified soil carbon in a series of experimental restoration sites established between 2009 and 2011 as part of the MillionTreesNYC Afforestation Project in New York City. Soil cores (0–100 cm) were collected at 10 sites and analyzed for total carbon content. Data were analyzed with respect to depth (0–10, 10–30, 30–70, 70–90, 90–100 cm), high (six species) versus low (two species) diversity planting palettes, and afforestation success (high or low). Results were compared with data from regional reference forest, degraded urban sites in New York City, and disturbed and undisturbed sites in other cities. High success afforestation sites had significantly larger carbon pools than low success afforestation sites and degraded NYC sites. We suggest that these differences were created by interactions between initial site conditions that facilitated plant community establishment and growth, which in turn increased soil carbon accumulation. These initial site conditions include land use history that influences soil physical and chemical factors, as well as proximity to existing forest stands. Diversity treatments had no effect on soil carbon levels, but these may need a longer time period to emerge. These results suggest that afforestation may enhance the capacity of urban soils to store carbon compared to urban degraded soils, but that urban soil properties and site characteristics constrain this capacity.