Effects of land cover patterns on pond water nitrogen and phosphorus concentrations in a small agricultural watershed in Central China

被引:7
作者
Xiao, Hengbin [1 ]
Su, Ronglin [1 ]
Luo, Yue [1 ,2 ]
Jiang, Yanbin [1 ]
Wang, Yan [1 ]
Hu, Ronggui [1 ]
Lin, Shan [1 ]
机构
[1] Huazhong Agr Univ, Coll Resources & Environm, Wuhan 430070, Peoples R China
[2] Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Changshu Natl Agroecosystem Observat & Res Stn, Nanjing 210008, Peoples R China
关键词
Ponds; Land cover patterns; Water quality; Scale effects; BUFFER ZONE; RIVER-BASIN; QUALITY; LANDSCAPE; RESERVOIR; SEDIMENT; IMPACT; LAKES; AREA;
D O I
10.1016/j.catena.2023.107800
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Seasonal variations in agricultural land cover patterns and their spatial scale effects on surface water nitrogen (N) and phosphorus (P) concentrations in watersheds have been major concerns. Understanding the relationships between land cover metrics and pond nutrients are of great significance to enhance water contamination prediction efficiencies and guide land use planning in agricultural watersheds. In this context, the present study aims to investigate the seasonal variations in the N and P concentrations in 28 ponds in a developed agricultural watershed in central China in 2019. Multivariate statistical analyses were applied to assess the relationships of the pond water N and P concentrations with multi-scale land cover patterns. Besides the pond water ammonium nitrogen (NH4+-N) concentrations, the total nitrogen (TN), nitrate nitrogen (NO3--N), total phosphorus (TP), and dissolved phosphorus (DP) concentrations in the investigated ponds were higher in summer than those observed in other seasons. The hierarchical partitioning model results demonstrated a spatial consistency in scale effects of land cover metrics on the pond hydrochemical parameters in the different seasons. Redundancy analysis (RDA) showed that the land cover patterns better predicted the variations in the pond water N and P concentrations at the 100 m buffer zone scale in spring and summer, as well as at the 50 m buffer zone scale in fall and winter. Among the land cover metrics considered in this study, the orchard area proportion (POR), landscape shape index (LSI), and largest patch index (LPI) showed the highest significant correlations with the pond water N and P concentrations. The results of this study provide valuable information for effective land use management to control pond water pollution and promote sustainable development in agricultural watersheds.
引用
收藏
页数:12
相关论文
共 50 条
  • [1] Development and application of GIS-based assessment of land-use impacts on water quality: A case study of the Kharaa River Basin
    Batbayar, Gunsmaa
    Pfeiffer, Martin
    Kappas, Martin
    Karthe, Daniel
    [J]. AMBIO, 2019, 48 (10) : 1154 - 1168
  • [2] Cumulative impacts of landuse on water quality in a southern Appalachian watershed
    Bolstad, PV
    Swank, WT
    [J]. JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION, 1997, 33 (03): : 519 - 533
  • [3] Forest cover correlates with good biological water quality. Insights from a regional study (Wallonia, Belgium)
    Brogna, D.
    Dufrene, M.
    Michez, A.
    Lath, A.
    Jacobs, S.
    Vincke, C.
    Dendoncker, N.
    [J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT, 2018, 211 : 9 - 21
  • [4] The role of wetland coverage within the near-stream zone in predicting of seasonal stream export chemistry from forested headwater catchments
    Casson, Nora J.
    Eimers, M. Catherine
    Watmough, Shaun A.
    Richardson, Murray C.
    [J]. HYDROLOGICAL PROCESSES, 2019, 33 (10) : 1465 - 1475
  • [5] Farm ponds in southern China: Challenges and solutions for conserving a neglected wetland ecosystem
    Chen, Wenjun
    He, Bin
    Nover, Daniel
    Lu, Haiming
    Liu, Jian
    Sun, Wei
    Chen, Wen
    [J]. SCIENCE OF THE TOTAL ENVIRONMENT, 2019, 659 : 1322 - 1334
  • [6] Land-use change from arable lands to orchards reduced soil erosion and increased nutrient loss in a small catchment
    Chen, Zhujun
    Wang, Lei
    Wei, Ansheng
    Gao, Jingbo
    Lu, Yongli
    Zhou, Jianbin
    [J]. SCIENCE OF THE TOTAL ENVIRONMENT, 2019, 648 : 1097 - 1104
  • [7] HIERARCHICAL PARTITIONING
    CHEVAN, A
    SUTHERLAND, M
    [J]. AMERICAN STATISTICIAN, 1991, 45 (02) : 90 - 96
  • [8] Chinese Soil Taxonomy Research Group Institute of Soil Science Chinese Academy of Sciences Cooperative Research Group on Chinese Soil Taxonomy, 2001, Keys to Chinese Soil Taxonomy, V3rd
  • [9] Landscape diversity and forest edge density regulate stream water quality in agricultural catchments
    Clement, Francis
    Ruiz, Julie
    Rodriguez, Marco A.
    Blais, Daniel
    Campeau, Stephane
    [J]. ECOLOGICAL INDICATORS, 2017, 72 : 627 - 639
  • [10] Percentage land use in the watershed determines the water and sediment quality of 22 marshes in the Great Lakes basin
    Crosbie, B
    Chow-Fraser, P
    [J]. CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES, 1999, 56 (10) : 1781 - 1791