"negative environmental impact" is correct and usable in written English.
You can use it to describe the detrimental effects of a certain action, event, or process on the environment. For example, "The dam's construction had a significant negative environmental impact, causing the displacement of local wildlife species and disruption of aquatic ecosystems in the area."
Tourists must behave in a more environmentally friendly way to reduce the negative environmental impact of the global tourism industry.
The goats provide a chemical-free weed removal service with no negative environmental impact.
The board said the expansion would have no negative environmental impact.
"As currently practised, intensive driven grouse shooting is a negative environmental impact," said the RSPB's Jeff Knott.
JM: The points we make about Walmart in our book were given as examples of a very large, traditional company making progress in lessening its negative environmental impact.
"Evidence from other countries demonstrates that a bag levy is a simple and effective means to reduce substantially the negative environmental impact of carrier bag consumption.
However, many of us may not consider the negative environmental impact around the morning cup of coffee we rely on to start the day.
Although the government of Lakshadweep promotes tourism, the industry is closely monitored to guard against negative environmental impact.
Hilary Wharf, the director of HS2 Action Alliance, said: "The Government has done everything it can to pretend that HS2 will not have a huge negative environmental impact.
Resistance to composting is just one of many challenges facing designers hoping to reduce the negative environmental impact of shoes, but it is a challenge that designers and footwear companies are taking on.
For example, your article Lima climate talks on track for record carbon footprint (theguardian.com, 10 December) highlights the conference of the parties' (Cop) surprisingly negative environmental impact this year.
