Understanding the complex human and natural processes that occur in watersheds and stream ecosystems is critical for decision makers and planners to ensure healthy stream ecosystems. This study aims to characterize the Han River watershed in Korea and extract key relationships among watershed attributes and biological indicators of streams using principal component analysis (PCA) and self-organizing maps (SOM). This study integrated watershed attributes and biological indicators of streams to delineate the watershed and stream biological status.

This paper describes and critically reviews an important but under-theorized value capture mechanism that we have termed “vertical allocations” (or vertical exactions). This mechanism enables cities to capture value vertically by allocating floor space for public utilities in privately owned, mixed-use, vertical development. As a value capture tool, vertical allocations allow the government to tap value uplift to supply the nearby neighborhood, and the city as a whole, with much needed public services.

Land use in traditional village clustering areas often exhibits slight dynamic changes; however, significant hidden ecological hazards may be present in local settlements. There is still a lack of dynamic ecological risk assessments for the corresponding classification-based prevention strategies and landscape ecosystem attributes’ enhancement. Based on the land-use changes, this study integrated the ecosystem structure and function to explore the characteristics of the landscape ecological risk in traditional village clustering areas.