The phrase "a patchwork of areas" is correct and usable in written English.
It can be used to describe a situation or a place that consists of various distinct parts or elements that are combined together, often in a way that is not uniform or cohesive.
Example: "The city is a patchwork of areas, each with its own unique character and charm."
Alternatives: "a mosaic of regions" or "a blend of zones".
At a regional scale, changes in dominant species between unburned and repeatedly burned areas might be an argument for maintaining a patchwork of areas burned at variable intervals.
At the very least, the landscape was a patchwork of areas altered by aboriginal people and areas shaped primarily by bio-physical processes.
Syria has become a patchwork of areas controlled by the government, an array of rebel groups, Islamic State militants, and Kurdish militia.
A US National Intelligence assessment estimate from the end of last year predicted that if all international forces left Afghanistan by the end of the year, then Kabul would lose control over much of the country, which would then spiral into a patchwork of areas governed by the Taliban and tribal warlords.
The tumor microenvironment is inherently heterogeneous and is best characterized as a patchwork of areas of adequate and inadequate oxygen and nutrient delivery, which leads to the epigenetic and genetic adaptations of clones and increases the aggressiveness of the tumor by local invasion and distant metastasis.
The square mile itself is a patchwork of conservation areas and listed buildings.
Before the conflict, South Ossetia was a patchwork of ethnic areas overseen by peacekeepers, and its separatist government had no control over Tamarasheni.
At the time, Wales was a patchwork of independent areas.
This pattern is characterised by a patchwork of intermingled areas of increased and decreased attenuation that may represent (1) patchy interstitial disease, (2) obliterative small airways disease and (3) occlusive small vascular disease [4].
The five boroughs are a patchwork of devastated areas and blocks that are completely unaffected by the storm.
Unlike other historical cities such as Athens or Rome, where there is an obvious patchwork of areas from different periods, London's scheduled sites and listed buildings are individual structures, in many cases assembled gradually by parts from many different periods.
