The document discusses the importance of environmental considerations in Comprehensive Land Use Planning (CLUP) preparation. It outlines the key principles of CLUP according to the HLURB guidelines, including adopting an integrated watershed ecosystem management approach and incorporating climate change adaptation. The enhancements to the CLUP guidebook are also summarized, such as integrating public-private land use and green growth strategies. The document then discusses the principles of the Philippine Agenda 21 and National Framework for Physical Planning that the CLUP process should follow, such as ensuring ecological integrity and people's empowerment.