Potential for high contribution of urban gardens to nutrient export in urban watersheds
Potential for high contribution of urban gardens to nutrient export in urban watersheds
复制标题
城市花园对城市流域养分输出的巨大贡献潜力
DOI:
10.1016/j.landurbplan.2022.104602
复制
发表时间:
2023
影响因子:
9.1
通讯作者:
Metson, Geneviève Suzanne
中科院分区:
文献类型:
--
作者:
Small, Gaston E.;Martensson, Niklas;Janke, Benjamin D.;Metson, Geneviève Suzanne
Urban gardens and farms typically use compost as a source of nutrients, often at levels that exceed crop nutrient demands. Although land dedicated to agriculture is a small fraction of urban land use, high input rates coupled with low nutrient use efficiencies suggest that export of nitrogen (N) and phosphorus (P) from this land could be potentially important contributors to urban nutrient budgets. We used the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) Nutrient Delivery Ratio model to examine the potential impact of garden density, compost input rates, and nutrient retention efficiency on N and P export from stormwater runoff for a 737-ha urban residential area in Saint Paul, Minnesota. Although gardens and farms accounted for 0.1-0.5% of land area in our scenarios, compost inputs accounted for as much as 33% of N inputs and 85% of P inputs to the urban landscape. The contribution of gardens to urban nutrient export through stormwater runoff is highly dependent on modeled maximum retention efficiency values. If retention efficiency is high, gardens with low compost inputs are similar to other vegetated land uses in contributions to nutrient export, but gardens become significant contributors to watershed P export if compost inputs are high, or if retention efficiency drops to 75% or lower. These results underscore mass-balance constraints inherent in urban nutrient recycling and highlight the importance of understanding the long-term fate of excess nutrients applied to urban landscapes.
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DOI:
10.2495/dne-v13-n4-415-422
发表时间:
2018
影响因子:
--
作者:
Small, G.;Shrestha, P.;Kay, A.
通讯作者:
Kay, A.
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
I. Estévez;S. Seoane;A. Núñez;M. E. López
通讯作者:
M. E. López
影响因子:
6.7
作者:
C. V. Stechow;J. Minx;K. Riahi;J. Jewell;D. McCollum;M. Callaghan;J. Leon;A. Grinham;J. Church;B. Gibbes;C. Woodroffe;J. Canadell
通讯作者:
C. V. Stechow;J. Minx;K. Riahi;J. Jewell;D. McCollum;M. Callaghan;J. Leon;A. Grinham;J. Church;B. Gibbes;C. Woodroffe;J. Canadell
影响因子:
6.9
作者:
Bangshuai Han;A. Reidy;Aihua Li
通讯作者:
Aihua Li
影响因子:
3.7
作者:
Shrestha, Paliza;Small, Gaston E.;Kay, Adam
通讯作者:
Kay, Adam