“Source–sink” landscape pattern analysis of nonpoint source pollution using remote sensing techniques

Abstract

Research on the "source-sink" landscape pattern of nonpoint source pollution is of great significance to natural resource management, environmental protection, water quality improvement, nonpoint source pollution prevention and control, and ecological security pattern construction. Remote sensing has proven by many scholars as a practical and effective technique to study landscape patterns and nonpoint source pollution. However, there are still many obstacles to the application of remote sensing technology, such as classification errors, scale effects and the issue, whereby landscape metrics cannot describe the landscape information comprehensively. In view of the characteristics of the macroscale and multi-scale of remote sensing, the analysis of landscape patterns is the basis for the study of the relationship research between patterns and ecological processes, and it is also the key to the study of landscape dynamics and functions. This paper attempts to summarize the representative results and the challenges of remote sensing in the study of the source and sink landscape of the nonpoint source pollution landscape and provide corresponding solutions as a reference for future research.

Study on the Spatial Pattern of Migration Population in Egypt and Its Flow Field Characteristics from the Perspective of “Source-Flow-Sink”

“…In terms of landscape ecology science, Nicola Zaccarelli analyzed the Source/Sink Patterns of Disturbance and Cross-Scale Mismatches in a Panarchy of Social-Ecological Landscapes [51]; Ruiming Ma and Pramanik evaluated the urban heat island landscape patterns of Shenzhen, China and Delhi, India based on the "Source-Sink" theory respectively [52,53]. In terms of environmental science, Zhang X, Jiang Mengzhen and Xin Zhang analyzed the source-sink landscape pattern of non-point source pollution [54][55][56]. In terms of resource science, Wei Huang analyzed the grain source-sink system of prefecture level cities in China [57]; Wu X D analyzed the source-sink system of the world's arable land [58]; Wu X F analyzed the source and sink systems of world crude oil and coal supply chain [59,60].…”