Influence of land use on the persistence effect of riverine phosphorus
Influence of land use on the persistence effect of riverine phosphorus
复制标题
土地利用对河流磷持久效应的影响
DOI：
10.1002/hyp.11408
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Kun Mei
中科院分区：
文献类型：
--
作者：
Hong Huang;Zhenfeng Wang;Dingjiang Chen;Fang Xia;Xu Shang;YuanYuan Liu;R;y A. Dahlgren;Kun Mei
遗留营养素的持久性效应贡献经常被引用为广泛实施流域营养素减缓行动后水质改善很少或没有改善的原因，但对影响这种响应的因素（通常称为“持久性效应”）的了解有限。本文利用2010-2016年中国东部某饮用水水库流域13个小流域的月水质数据，采用去趋势波动分析和斯皮尔曼分析方法，评估了土地利用对流域磷持续性效应的影响。使用去趋势波动分析计算赫斯特指数α，以评估流域遗留P特征（α <0.5、α > 0.5和α < 0.5分别表示白色噪声、持续性和反持续性）。结果表明，13个流域河流P的时间序列表现出弱到强的P持续性（0.60-0.81）。赫斯特指数α与农业用地（R =-0.47，p = 0.11）和已开发土地（R =-0.67，p = 0.01）呈负相关，与林地覆盖（R = 0.48，p = 0.10）呈正相关。河流磷的持久性效应主要取决于河流磷的滞留能力（土壤地球化学遗产）和迁移效率（水文学遗产）。具有强大蓄水能力的集水区（例如，生物量吸收/储存和土壤PO 4吸附）和低迁移效率导致河流P的持久性效应更强。在实践中，源控制在持久性弱的集水区更有效，而汇控制（例如，河岸缓冲区和湿地）在具有强持久性效应的集水区中更受欢迎。
The persistence effect contribution of legacy nutrients is often cited as a reason for little or no improvement in water quality following extensive implementation of watershed nutrient mitigation actions, yet there is limited knowledge concerning factors influencing this response, often called the “persistence effect.” Here, we adopted detrended fluctuation analysis and Spearman analysis methods to assess the influence of land use on the watershed phosphorus (P) persistence effect, using monthly water quality records during 2010–2016 in 13 catchments within a drinking water reservoir watershed in eastern China. Detrended fluctuation analysis was used to calculate the Hurst exponent α to assess watershed legacy P characteristics (α ≈ 0.5, α > 0.5, and α < 0.5 indicate white noise, persistence, and anti‐persistence, respectively). Results showed weak to strong P persistence (0.60–0.81) in the time series of riverine P in the 13 catchments. The Hurst exponent α had negative relationships with agricultural land (R = −.47, p = .11) and developed land (R = −.67, p = .01) and a positive relationship with forest land cover (R = .48, p = .10). The persistence effect of riverine P was mainly determined by retention ability (biogeochemical legacy) and migration efficiency (hydrological legacy). A catchment with strong retention capacity (e.g., biomass uptake/storage and soil PO4 sorption) and low migration efficiency results in a stronger persistence effect for riverine P. In practice, source control is more effective in catchments with weak persistence, whereas sink control (e.g., riparian buffers and wetlands) is preferred in catchments with strong persistence effects.
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DOI：
--
发表时间：
1951
期刊：
Transactions of the American Society of Civil Engineers
影响因子：
--
作者：
H. Hurst
通讯作者：
H. Hurst
影响因子：
2.4
作者：
Jarvie, Helen P.;Sharpley, Andrew N.;Neal, Colin
通讯作者：
Neal, Colin
DOI：
10.1016/j.physa.2009.05.046
发表时间：
2009-10-01
影响因子：
3.3
作者：
Muchnik, Lev;Bunde, Armin;Havlin, Shlomo
通讯作者：
Havlin, Shlomo
中国东部永安流域各乡镇农田磷收支、利用效率和遗留池的长期（1980-2010）变化
影响因子：
6.6
作者：
Chen, Dingjiang;Hu, Mingpeng;Dahlgren, Randy A.
通讯作者：
Dahlgren, Randy A.
影响因子：
6.4
作者：
F. Worrall;T. Burt
通讯作者：
F. Worrall;T. Burt