While an increase in the size and number of conservation areas is expected as part of global environmental commitments, at the same time, Protected Area Downgrading, Downsizing, and Degazettement, or PADDD, is becoming more frequent worldwide. This paper analyzes the causal relationships between land claims and human settlements on the one hand and the downsizing process of a protective forest in southeastern Ecuador on the other.

In Hong Kong, reclamation is the main method for developing new land use areas as most country parks and mountains are protected under a land policy that emphasizes conservation for their high ecological value. Therefore, the land use for urbanized area in Hong Kong is limited, which has become an issue of concern. Hong Kong’s population is increasing; however, the amount of available land use is insufficient to meet the demand. Developing a high density of buildings is one of the critical strategies of Hong Kong’s government.

Given the scarcity of land resources in most Chinese cities, the fragmentation of construction land use is a greater constraint than expansion for urban sustainability. Therefore, there is an urgent need to quantify the fragmentation level of construction land use for planning and managing practices. This study focuses on residential land use, which is one of the most important types of construction land use within built-up urban areas.