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评估印尼流域的健康状况,使用不透水面积作为指标

Rossi Hamzah^1,2, Bunkei Matsushita³

¹Graduate School of Life and Environmental Sciences, University of Tsukuba, Tennoudai 1-1-1, Tsukuba 305-8572, Japan.

Sensors (Basel, Switzerland)

|July 11, 2023

概括

一种使用卫星数据的新方法准确估计了流域中不透水面积百分比 (ISA%). 虽然大多数印度尼西亚的流域仍然健康,但ISA的快速增长,特别是在农村地区,表明未来的风险没有管理.

科学领域:

环境科学环境科学
遥感遥感遥感遥感
水文学的水文学

背景情况:

不透的表面对流域生态系统的功能产生重大影响.
不透水面积百分比 (ISA%) 是评估流域健康状况的关键指标.
从卫星数据准确,大规模的ISA%估计带来了挑战.

研究的目的:

通过整合白天和夜间卫星数据,开发一种用于估计ISA%的新方法.
为印尼从2003年到2021年每年生成ISA%的分布图.
使用生成的ISA%数据评估印尼流域的健康状况.

主要方法:

开发了一种联合白天和夜间卫星数据方法,用于ISA%的估计.
为印度尼西亚 (2003-2021) 生成年度ISA%分布图.
应用了基于ISA%的流域健康评估的Schueler标准.

主要成果:

开发的方法在不同的ISA%水平上显示出高精度 (RMSE:0.52公里2,MAPD:16.2%,Bias: -0.08公里2).
88%的印尼流域在2021年被发现没有受到影响.
印度尼西亚的总ISA从3687.4平方公里 (2003年) 升到10,505.5平方公里 (2021年),其中农村地区的增长最多.

结论:

开发的基于卫星的方法是强大的,可以适应区域ISA%估计.
目前印度尼西亚的流域健康状况普遍良好,但ISA的快速扩张带来了未来的风险.
积极的流域管理对于减轻不断增加的不透水面带来的潜在负面影响至关重要.

关键词:

莫迪斯NDVI是第六种.这是SNPP-VIIRS-DNB.夜间灯光在夜间灯光通过辐射校准的DMSP-OLSS.时间混合分析时间混合分析.

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