Ecological and Landscape Rehabilitation of a Quarry Site in Hong Kong

Jim, C.Y.

Publication Date:

Quarrying for granite in Hong Kong, mainly for construction aggregates, has left huge and unsightly scars on the landscape. Recent government policy demands rehabilitation of the disturbed lands and restoration of the landscape adopting the ecological approach. At an active quarry, a method was tested for controlled restoration: blasting of the vertical rocky production faces to pile up the debris and to form artificial slopes that mimic those of the environs in a landform replication approach. On the scree blast piles, a soil cap of fine-earth materials with organic amendments was installed to grow mainly tropical leguminous trees. The restoration trial largely failed, with extensive death or poor performance of most plants. Recommendations are given on the application of organic amendments to establish and maintain soil structure, restore decomposition regime, and raise nutrient and moisture storage capacities for a modified approach that could overcome the site difficulties.

Resource Type:
Peer-reviewed Article

Restoration Ecology