The study looked at how well landscape planning projects are being carried out based on different planning phases. They found that while certain elements of landscape planning are considered important, the actual performance of these projects falls short. Specifically, the sections on 'site landscape survey' and 'landscape design guideline' are not as well-implemented as 'landscape concept plan' and 'landscape basic plan'. This suggests that improvements are needed in these areas to make landscape planning projects more effective, especially for new development sites.