The phrase "affecting the supply of" is correct and usable in written English.
It can be used when discussing factors that influence the availability or quantity of a particular good or resource.
Example: "The recent weather changes are affecting the supply of fresh produce in the market."
Alternatives: "impacting the availability of" or "influencing the quantity of".
Changes in temperature, he said, could be one of several factors affecting the supply of the fungus.
Something awry in these plantations – affecting the supply of the single biggest-selling item in Australian supermarkets – can produce a spike in the country's overall consumer price index.
I enjoyed the details of his investigations of factors affecting the supply of housing and other structures that may help to explain their rapid increase in value in major cities.
The enhanced flows in the winter low flow period are beneficial in that they reduce the likelihood of salt water intrusions in the estuary adversely affecting the supply of freshwater to Shanghai.
Theoretical and empirical studies on the main determinants of the household's decision to send children to work rather than to school can be grouped into two main veins: the demand for education, introduced by Becker (1964), and the one that focuses on the impact of various constraints affecting the supply of child labor, the demand for education, or both simultaneously.
Odwalla's juice, because of production costs, is "typically sold at prices higher than most other juice products", and the price of the juice can vary over time because of weather or disease affecting the supply of fruit and vegetables.
But now that regulators are moving to stem the flow of raw milk in the East, affecting the supplies of Boston lawyers, business owners, and health professionals, as well as even Washington bureaucrats, the situation is moving from fringe to mainstream.
Price increases and the import crisis have also begun to affect the supply of medicines into tEgypt.
That jump in price illustrates how the disaster in Japan has immediately affected the supply of all sorts of components used in myriad consumer electronics and other products.
