Are there any alternative solutions to Negombo Development other than the environmentally sensitive Mangrove forest?

Are there any alternative solutions to Negombo Development other than the environmentally sensitive Mangrove forest?
This is the Document which was tabled the Negombo Environmental Committee of Negombo Municipal Council on 31ST of August 2007.
The annexes documents are
1. Save the Negombo Mangrove forest
2. Photograph No 1 – Before the deforestation
3. Photograph No 2 - Deforestation Began