The need to ensure a shared national approach to regional development and growth across New Zealand is one of many topics being discussed at the 2015 LGNZ conference in Rotorua today.

Most of the country's mayors are at the LGNZ conference in Rotorua

Local Government New Zealand's new transport study, Mobilising the Regions, highlights the economic and social impact of strategic transport decisions nationally and in the regions and the direct link between regional development, national prosperity, social well-being and cohesiveness.

LGNZ President Lawrence Yule says decisions affecting New Zealand should be made with full consideration of their regional impact.

"Nearly 40 per cent of New Zealand's total GDP is located in our regions. This means that if New Zealand's regions are doing well, so is New Zealand," says Lawrence.

"Quite simply, local, regional and national objectives should be shared and linked."

Local government, like central government has a huge role to play achieve strong regions throughout New Zealand.

"One of LGNZ's major strategic policy priorities is for a shared national approach to regional development and growth across New Zealand. This is critical to lift economic growth over the next decade. And that means investment in all our regions and all our communities.”

Lawrence says the report, which is due to be released next month, has important implications for New Zealand's economic outcomes and social connectivity.

"The study will provide the foundation for a better understanding of the importance all modes of our transport network and the impact on regional economic development. We see that an ‘all of New Zealand' approach is needed to strengthen both our communities and our economic potential as a country.”

The study's earlier findings show:

LGNZ says the study is critical given the recent changes in regional air travel and discussion on the future of rail, and this raises important questions about the resilience of the transport links that connect our regional populations and economies."

"We need an integrated transport policy that supports economic growth and social connectivity for the people in New Zealand's regions."

"Local input into national transport policy decisions is imperative to the success of our regional economies."

The final report, Mobilising the Regions is due to be released in August.