Abstract
Hancang River is a river on the eastern border of Jinan City. In recent years, with the development of cities, river flow has dropped sharply, river water has been polluted, and the ecological environment of the basin has declined. Improving the water ecological environment and enhancing the resilience of the water ecology of the river basin were set as the research goals, especially coupling of hydrological and ecological processes and the recycling of sewage resources. The “patch-corridor-matrix” theory of landscape ecology, the Least-cost distance model and the Arc Hydro Tools module of the ArcGIS platform were used to describe the river system and basin boundaries, optimize the current water network and the path network of the ecosystem. A novel ecological network and water network were proposed to form the final aquatic ecosystem, which combines the hydrological process with the ecosystem, and three decentralized wastewater treatment systems were designed to reduce the wastewater directly flowing into the river. The ecosystem resilience of the basin will be enhanced.
Highlights
“Ecological resilience” refers to the ability of an ecosystem to withstand and self-recover under the premise of maintaining essential life processes and structures without fundamental changes when subjected to external disturbances
A novel ecological network and water network were proposed to form the final aquatic ecosystem, which combines the hydrological process with the ecosystem, and three decentralized wastewater treatment systems were designed to reduce the wastewater directly flowing into the river
The relationship between landscape pattern and ecological process is the key point of landscape ecology research (Fu et al 2001) [2]
Summary
“Ecological resilience” refers to the ability of an ecosystem to withstand and self-recover under the premise of maintaining essential life processes and structures without fundamental changes when subjected to external disturbances. The relationship between landscape pattern and ecological process is the key point of landscape ecology research (Fu et al 2001) [2]. The principles and applications of landscape ecology are a comprehensive reflection of human activities and economic development in social society (Han et al 2005) [3], including landscape structural diversity and spatial distribution (Hu et al 2011) [4]. The concept of landscape pattern optimization is proposed on the basis of landscape ecological planning, land ecology, and computer technology. The purpose of land use planning is to optimize the landscape pattern. Some achievements have been made in the study of landscape ecology, the research on landscape pattern optimization is still in primary stage. Methods, and principles are not very available, and the concept has not been clearly defined (Vannote et al 1980). [11] Optimizing the landscape pattern while ensuring that the landscape pattern plays a decisive role in ecological development in the landscape, attention should be paid to the role of ecology in adjusting and maintaining the landscape pattern (Word 1898). [12] Based on a comprehensive understanding of landscape patterns, functions, and ecological processes, the establishment of critical landscape components or combinations that can control ecological engineering and improve ecological resilience is of guiding significance for improving regional ecological functions and maintaining regional ecological environment security
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