Land conservation can mitigate freshwater ecosystem services degradation due to climate change in a semiarid catchment: The case of the Portneuf River catchment, Idaho, USA
Land conservation can mitigate freshwater ecosystem services degradation due to climate change in a semiarid catchment: The case of the Portneuf River catchment, Idaho, USA
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DOI：
10.1016/j.scitotenv.2018.09.260
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发表时间：
2019-02-15
影响因子：
9.8
通讯作者：
Baxter, Colden V.
中科院分区：
文献类型：
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作者：
Huang, Li;Liao, Felix Haifeng;Baxter, Colden V.
越来越多的证据表明，环境变化对淡水生态系统服务产生影响，特别是通过土地利用和气候变化。然而，关于土地保护如何有助于减轻水资源可持续性的不利影响，人们知之甚少。本文利用投资工具和残差趋势法对美国爱达荷州波特诺夫河流域淡水生态系统服务的气候变化和土地保护的联合效应和相对贡献进行了评价。我们开发了五个关于美国最大的农业土地退休计划-自然保护储备计划(CRP)和河岸缓冲区登记的得失的假设情景，并评估了它们与气候变化的相互作用。结果表明，由于气候变化，波特诺夫河流域的实际产水量可能会减少56%，由于CRP入学人数的减少，可能会减少24%。反之，若按类似于30%的比例推进CRP投放，并实施河岸缓冲区保护，2050年供水量可由原来的56%减少到26%，总磷(TP)和总氮(TN)输出量分别减少10%和11%，总悬浮泥沙(TSS)减少17%。这项研究表明，更多地实施《气候变化框架公约》可能会保护关键的淡水生态系统服务，并有助于主动缓解，特别是对于易受气候条件变化影响的半干旱地区。(C)2018年，由爱思唯尔出版。
There is increasing evidence of environmental change impacts on freshwater ecosystem services especially through land use and climate change. However, little is known about how land conservation could help mitigate adverse water-sustainability impacts. In this paper, we utilized the InVEST tool and the Residual Trends method to assess the joint effects and relative contributions of climate change and land conservation on freshwater eco-systemservices in the Portneuf River catchment in Idaho, USA. Wedeveloped five hypothesized scenarios regarding gain and loss in the enrollment of Conservation Reserve Program (CRP), the largest agricultural landretirement program in the U. S., plus riparian buffer and assessed their interactions with climate change. Results suggest that the realized water yield in the Portneuf River catchment would possibly be 56% less due to climate change and 24% less due to the decline of CRP enrollment. On the contrary, if CRP enrollment is promoted by similar to 30% and riparian buffer protection is implemented, the water supply reduction in the year 2050 could be changed from 56% to 26%, the total phosphorus (TP) and total nitrogen (TN) export would be reduced by 10% and 11%, and the total suspended sediment (TSS) reduced by 17%. This study suggests that increasing implementation of the CRP would likely preserve key freshwater ecosystem services and assist proactive mitigation, especially for semiarid regions vulnerable to changing climate conditions. (C) 2018 Published by Elsevier B.V.