You should find the relationship between social issues and land use planning. There are three examples you need to mention in the article:
1. The climate change will cause many social impacts and social issues. climate change and land use planning have a very strong relationship. The new land use should be located at safety site that will not be prone to the impacts of climate change. For example, locating new development out of low-lying areas or flood prone areas.
2. Moreover, the climate change will also cause social unrest, crime and conflict given the huge stresses that some people will endure and the fact that many people will be displaced. Displacement will create stresses for both the displaced people and receiving population, managing resettlement will be an important role of planning so as to ensure that people resettled are not further disadvantaged. Planners will have to work hard to prevent displacement adding existing levels of income inequality and spatial segregation. So you must talk about the relationship between urban renewal, affordable housing and land use planning.
3. ‘Mixed land use development, if well planned and designed, has the potential to generate an interesting, vibrant atmosphere that brings people closer, increases social capital and social cohesion, addresses environmental issues and fosters economic development.’ (Metropolitan Strategy Review, Sydney Towards 2036 p23)
‘an assumption that the layout and form of the physical environment would shape, even determine, the quality of social life’ (Nigel Taylor, Urban Planning Theory Since 1945, p42)
Not only these three points, you can also mention other reasons why social issues will be the big land use planning challenge of the 21st century