农业环境科学学报2024，Vol.43Issue(7)：1580-1589,10.DOI:10.11654/jaes.2023-0900
多时空景观格局对南淝河水质的影响
Impact of multi-temporal and spatial landscape patterns on the water quality of the Nanfei River
摘要
Abstract
This study was conducted to analyze the influence of landscape pattern on the water quality of the Nanfei River in Hefei City.Seasonal changes in water quality and the correlation between water quality and landscape composition and landscape indices at different spatial and temporal scales were analyzed based on the land use data and water quality measurement data of the Nanfei River basin using the Mann-Whitney U-test,Spearman's correlation,and redundancy analysis.The results showed that:the overall water quality of the Nanfei River during the non-flood season was better than that during the flood season,and the water quality pollution indicators were more discrete in spatial distribution.Construction land was positively correlated with permanganate index(CODMn),nitrate nitrogen(NO-3-N),ammonia nitrogen(NH3-N),total nitrogen(TN),phosphate(PO3-4-P),and total phosphorus(TP)in both non-flood and flood seasons,and it was a"source landscape";whereas the woodland and water areas were"sink landscapes".The 200 m and 300 m riparian buffer zones were the spatial scales with the highest water quality interpretation rate by the landscape pattern indices in non-flood season and flood season.Patch density(PD),landscape shape index(LSI),area weighted average patch fractal dimension(FRAC-AM),perimeter-area fractal dimension(PAFRAC),interspersion and juxtaposition index(IJI),and the mean of Euclidean nearest-neighbor distance(ENN_MN)were the main influencing factors for water quality pollution in the Nanfei River.It was found that both landscape composition and landscape indices had a large impact on the water quality of the Nanfei River.Future management of water quality should be optimized from the source and sink landscape of connectivity,fragmentation,dominance,and diversity of the watershed.关键词
南淝河/流域/水质/多时空尺度/景观格局Key words
Nanfei River/basin/water quality/multiple spatial and temporal scales/landscape pattern分类
资源环境引用本文复制引用
顾洋,张平究,秦风约,蔡永久,王晓龙..多时空景观格局对南淝河水质的影响[J].农业环境科学学报,2024,43(7):1580-1589,10.基金项目
国家自然科学基金项目(41971147) （41971147）
巢湖流域山水林田湖草监测体系建设项目(调查评估部分)(2022BFAWZ02436)National Natural Science Foundation of China(41971147) （调查评估部分）
Chaohu Lake Basin Mountains,Rivers,Forests,Farmlands,Lakes,and Grasslands Monitoring System Construction Project(Survey and Assessment Component)(2022BFAWZ02436) （Survey and Assessment Component）
