首页|杭州城西科创大走廊湿地湖链景观水质信息多源遥感监测方法研究

杭州城西科创大走廊湿地湖链景观水质信息多源遥感监测方法研究

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
杭州城西科创大走廊是杭州城市未来发展至关重要的区域,包含青山湖、西溪湿地、南湖、苕溪等诸多水系资源,对城西生产生活的影响日益显著.本研究利用 Sentinel-2 B影像、无人机高光谱数据及实测 ASD光谱,选择化学需氧量(CODMn)、总氮(TN)、总磷(TP)、溶解氧(DO)和浊度(Tur)等指标评价水质状况.结果显示:杭州城西科创大走廊综合水质指数为 50～65,水质等级评价为"中等";冬季水质状况优于夏季,青山湖和西溪湿地的水质状况优于南湖、和睦湿地及苕溪等其他水系.通过计算色度角和综合水质指数,建立了预测模型,实现了对研究区水质的定量监测.尽管基于色度角的模型预测精度较高,但存在一定的偶然性,可迁移性有待进一步提高.综上所述,杭州科创大走廊的水质状况总体较好,但仍需关注苕溪等水质变化较大的水系.
Study on Multi-source Remote Sensing Monitoring Method for Water Quality Information of Wetland Lake Chain Landscape in Hangzhou Western Science and Technology Corridor
Hangzhou Western Science and Technology Corridor is a crucial area for the future city development of Hangzhou.It encompasses Qingshan Lake,Xixi Wetland,South Lake,Tiaoxi River,and other water resources that have an increasingly significant impact on production and life in the western part of the city.This study uses Sentinel-2B images along with UAV hyperspectral data and measured ASD spectra to select chemical oxygen demand(CODMn),total nitrogen(TN),total phosphorus(TP),dissolved oxygen(DO),and turbidity(Tur)as indicators for evaluating water quality.The results show that the comprehensive water quality index ranged from 50 to 65 indicating a"medium"grade for water quality.Winter exhibits better water quality than summer while Qingshan Lake and Xixi Wetland have better water quality compared to Nanhu,Hemu Wetland,Tiaoxi River and other water resources.By calculating the colorimetric angle and comprehensive water quality index,the study establishes a prediction model to achieve quantitative monitoring of the study area's water quality.Although the prediction accuracy based on chrominance angle is high,some contingencies exist,and portability needs further improvement.In summary,the overall water quality in Hangzhou Western Science and Technology Corridor is generally good.However,it is still necessary to pay attention to the river system with large water quality changes such as Tiaoxi River.

Hangzhou West Science and Technology CorridorSentinel-2BUAV hyperspectrumchrominance angle αcomprehensive water quality index

祝惠琼、彭可成、吴金蓉、金煜冰、雷惠、周斌、荆长伟、凌在盈

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杭州师范大学信息科学与技术学院,浙江 杭州 311121

杭州师范大学遥感与地球科学研究院,浙江 杭州 311121

浙江省城市湿地与区域变化研究重点实验室,浙江 杭州 311121

杭州城西科创大走廊 Sentinel-2B 无人机高光谱 色度角α 综合水质指数

杭州师范大学本科生创新能力提升工程项目杭州师范大学本科生创新能力提升工程项目

CX2022202CX2023114

2024

10.19926/j.cnki.issn.1674-232X.2023.04.241

杭州师范大学学报(自然科学版)
杭州师范大学

杭州师范大学学报(自然科学版)

CSTPCD
影响因子：0.386
ISSN：1674-232X
年,卷(期)：2024.23(4)
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