农业源头流域景观异质性与溪流水质耦合关系

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摘要以丹江口库区胡家山流域为研究区域，分析了溪流枯、丰水期的水质变化特征，结合流域和河岸缓冲带景观类型及其格局，运用Spearman秩相关分析筛选了影响溪流水质的景观指数，利用逐步回归和冗余排序法定量描述景观格局与溪流水质的耦合关系.结果表明：溪流水质指标中氨氮和总磷浓度时空变化较大，其标准变异系数范围分别为69.8%~207.6%和52.0%~146.1%.景观类型中耕地和居民地是溪流水体污染的重要来源，两者在100m河岸缓冲带尺度上对氨氮的解释程度为58.6%，高于流域尺度；景观格局指数中蔓延度、林地和居民地斑块密度、林地和居民地最大斑块指数以及林地和耕地聚集度指数等显著影响溪流水质（P<0.05），流域尺度上各景观类型的景观指数对总氮和总磷的解释程度分别介于71.1%~81.6%和74.5%~83.8%，均高于100m河岸缓冲带尺度，其中蔓延度对总氮和总磷均有显著影响（P<0.05）.无显著因子进入高锰酸盐指数模型中，其浓度变化是各景观指数共同作用的结果.此外，景观格局季节变化也显著影响溪流水质.枯水期景观指数能够更好的解释总氮和总磷变化，而丰水期对氨氮的解释程度要好于枯水期.

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	徐建锋
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	史志华

关键词 ：溪流水质, 景观格局, 土地利用, 河岸缓冲带, 回归分析, 冗余分析

Abstract：This study was conducted in the Hujiashan catchment close to the Danjiangkou Reservoir. In consideration of landscape patterns at the catchment and 100m buffer scale, the relationships between landscape characteristics and spatiotemporal variations of stream water quality were explored by combining Spearman's rank correlation analysis, stepwise regression analysis and redundancy analysis. The results showed that the ranges of standardized coefficients of variation for ammonia nitrogen and total phosphorus were 69.8%~207.6% and 52.0%~146.1%, indicating the significant spatiotemporal variations. Cropland and residential land were the primary sources of stream water pollution, which explained 58.6% of variations of NH₃-N at 100m buffer scale. Landscape metrics including contagion, patch densities of forest and residential land, largest patch index of forest and residential land, and aggregation intensities of forest and cropland had significant effects on stream water quality (P<0.05). Landscape metrics in the whole catchment accounted for 71.1%~81.6% of total nitrogen and 74.5%~83.8% of total phosphorus, which performed better than those at the 100m buffer scale. All landscape metrics had the combined effects on the concentration of COD_Mn. Furthermore, stream water quality was significantly influenced by seasonal variations of landscape pattern. The variations of total nitrogen and total phosphorus in the dry season and ammonia nitrogen in the wet season could be better explained by landscape metrics.

Key words： stream water quality landscape metrics land use buffer zone linear regression models redundancy analysis

收稿日期: 2016-02-02

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基金资助:公益性行业（农业）科研专项（201503106）；国家自然科学基金项目（41301285）

通讯作者: 史志华 E-mail: pengshi@mail.hzau.edu.cn

作者简介: 徐建锋(1984-),男,山东烟台人,华中农业大学博士研究生,主要从事面源污染、生态保护研究.

引用本文:

徐建锋, 尹炜, 闫峰陵, 史志华. 农业源头流域景观异质性与溪流水质耦合关系[J]. 中国环境科学, 2016, 36(10): 3193-3200. XU Jian-feng, YIN Win, YAN Feng-ling, SHI Zhi-hua. The coupling relationship between landscape heterogeneity and stream water quality in an agricultural catchment. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(10): 3193-3200.

链接本文:

http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2016/V36/I10/3193

[1]	Carpenter S R, Caraco N F, Correll D L, et al. Nonpoint pollution of surface waters with phosphorus and nitrogen [J]. Ecological Applications, 1998,8(3):559-568.
[2]	Edwin D O, Zhang X L, Yu T. Current status of agricultural and rural non-point source Pollution assessment in China [J]. Environmental Pollution, 2010,158(5):1159-1168.
[3]	Bruce J P, Wilfred M W, Patrick J M, et al. Control of nitrogen export from watersheds by headwater streams [J]. Science, 2001, 292(5514):86-90.
[4]	王晓,郝芳华,张璇.丹江口水库流域非点源污染的最佳管理措施优选 [J]. 中国环境科学, 2013,33(7):1335-1343.
[5]	李俊祥,王玉洁,宋永昌,等.基于GIS的上海市河道及其水污染空间特征分析 [J]. 中国环境科学, 2004,24(5):632-635.
[6]	陈利顶,傅伯杰,赵文武.""源"""汇""景观理论及其生态学意义 [J]. 生态学报, 2006,26(5):1444-1449.
[7]	赵军,杨凯,邰俊,等.区域景观格局与地表水环境质量关系研究进展 [J]. 生态学报, 2011,31(11):3180-3189.
[8]	李恒鹏,黄文钰,杨桂山,等.太湖地区蠡河流域不同用地类型面源污染特征 [J]. 中国环境科学, 2006,26(2):243-247.
[9]	Li S Y, Gu S, Tan X, et al. Water quality in the upper Han River basin, China: the impacts of land use/land cover in riparian buffer zone [J]. Journal of hazardous materials, 2009,165(1-3):317-324.
[10]	国家环保局《水和废水监测分析方法》编委会.水和废水监测分析方法(第四版) [M]. 北京:中国环境科学出版社, 2002.
[11]	张大伟,李杨帆,孙翔,等.入太湖河流武进港的区域景观格局与河流水质相关性分析 [J]. 环境科学, 2010,31(8):1775-1783.
[12]	尹锴,崔胜辉,赵千钧,等.基于冗余分析的城市森林林下层植物多样性预测 [J]. 生态学报, 2009,29(11):6085-6094.
[13]	于兴修,杨桂山,李恒鹏.典型流域土地利用/覆被变化及对水质的影响 [J]. 长江流域资源与环境, 2003,12(3):211-217.
[14]	Ren W W, Zhong Y, Meligrana J, et al. Urbanization, land use, and water quality in Shanghai: 1947–1996 [J]. Environment International, 2003,29(5):649-659.
[15]	王晓燕,王一峋,王晓峰,等.密云水库小流域土地利用方式与氮磷流失规律 [J]. 环境科学研究, 2003,16(1):30-33.
[16]	Shi Z H, Ai L, Fang N F, et al. Modeling the impacts of integrated small watershed management on soil erosion and sediment delivery: A case study in the Three Gorges Area, China [J]. Journal of Hydrology, 2012,438-439:156-167.
[17]	孙金华,曹晓峰,黄艺.滇池流域土地利用对入湖河流水质的影响 [J]. 中国环境科学, 2011,31(12):2052-2057.
[18]	于超,储金宇,白晓华,等.洱海入湖河流弥苴河下游氮磷季节性变化特征及主要影响因素 [J]. 生态学报, 2011,31(23):119- 126.
[19]	Gillies R R, Box J B, Symanzik J, et al. Effects of urbanization on the aquatic fauna of the Line Creek watershed, Atlanta—a satellite perspective [J]. Remote Sensing of Environment, 2003, 86(3):411-422.
[20]	Zhao J, Lin L Q, Yang K, et al. Influences of land use on water quality in a reticular river network area: A case study in Shanghai, China [J]. Landscape and Urban Planning, 2015,137:20-29.
[21]	杨莎莎,汤萃文,刘丽娟,等.流域尺度上河流水质与土地利用的关系 [J]. 应用生态学报, 2013,24(7):1953-1961.
[22]	Xiao H G, Ji W. Relating landscape characteristics to non-point source pollution in mine waste-located watersheds using geospatial techniques [J]. Journal of Environmental Management, 2007,82(1):111-119.
[23]	王瑛,张建锋,陈光才,等.太湖流域典型入湖港口景观格局对河流水质的影响 [J]. 生态学报, 2012,32(20):6422-6430.
[24]	King R S, Baker M E, Whigham D F, et al. Spatial considerations for linking watershed land cover to ecological indicators in streams [J]. Ecological Applications, 2005,15(1):137-153.
[25]	张殷俊,陈爽,相景昌.河流近域土地利用格局与水质相关性分析—以巢湖流域为例 [J]. 长江流域资源与环境, 2011,20(9):1054-1061.
[26]	Sliva L, Williams D D. Buffer zone versus whole catchment approaches to studying land use impact on river water quality [J]. Water Research, 2001,35(14):3462-3472.
[27]	Boyer E W, Goodale C L, Jaworski N A, et al. Anthropogenic nitrogen sources and relationships to riverine nitrogen export in the northeastern USA [J]. Biogeochemistry, 2002,57-58(1): 137-169.
[28]	Buck O, Niyogi D K, Townsend C R. Scale-dependence of land use effects on water quality of streams in agricultural catchments [J]. Environmental Pollution, 2004,130(2):287-299.