An outspoken Trump admirer, Bolsonaro also vowed to realign Brazil with more advanced economies, such as the United States, overhauling diplomatic priorities after almost a decade and a half of leftist party rule.
When Brazil's military dictatorship ended in 1985, the balance of power tipped toward leaders of centrist and leftist leanings.
Bolsonaro, a legislator and former military officer, campaigned on his own version of Trump's "America First" slogan and eagerly embraces the term "fake news" to describe critical press coverage. "We won't have any more fights over this".
His quick reversal on the environment ministry will likely raise fears he will stick to his hardline conservative stance on other issues, too.
Days before Sunday's election, Bolsonaro back-peddled slightly, saying he would not pull the country out if Brazil's sovereignty was maintained - which could be interpreted in many ways. But more than two decades of UN-led efforts to curb the practice have largely failed, with Earth still losing a wooded area the size of Greece every year.
The 63-year-old far-right leader, who previously suggested that Brazil could pull out of the 2015 Paris Agreement on climate change, plans to merge ministries agriculture and environment, an aide said.
"We are entering a tragic time in which environmental protection will amount to nothing. The country is at war", he told TV network Record.
USA bans exports to Chinese DRAM maker citing national security risk
The US Commerce Department on Monday said Fujian Jinhua Integrated Circuit will be barred from buying US components and software. Jinhua sued the US company the following month in a Chinese court and obtained an order blocking sales of some Micron products.
Lewis Hamilton - 2018 the best year of my career
The 1-2 start will be the first for Red Bull since the start of the hybrid engine era in 2014. He almost found it when he saw a gap between the Red Bulls and tried to take it.
Trump ups rhetoric against media, clarifies on enemy of the people remark
But the attacks on the eve of the mid-term elections have prompted questions about whether he should tone down his rhetoric. He is planning an aggressive campaign schedule during the final days leading up to the November 6 elections.
"The fact Bolsonaro is already talking about reforms is a good sign", said economist Victor Candido of Guide Investimentos.
"Those who don't respect the law need to understand they will be held responsible, either before the law or by being taken down", he said.
In interviews on Monday, Mr Bolsonaro also said: He would withdraw government advertising from media outlets he judged to be "lying"; He aimed to open up protected land to road and infrastructure projects; The budget deficit would be narrowed and state firms would be privatized.
Launched in 2014, the "Operation Car Wash" investigation has led to the jailing of numerous country's top businessmen and politicians.
Although politicians of all stripes have fallen in the "Car Wash" probe, Moro has been accused of being particularly merciless on the left - especially former president Luiz Inacio Lula da Silva, who had been trying to stage a comeback in this year's presidential race.
The guilty verdict was upheld on appeal and Brazil's Supreme Court has rejected numerous requests to free the former president, universally known as Lula.
"I first want to thank God", Bolsonaro told supporters in a video transmitted from his home in Rio, recounting how he was stabbed while campaigning last month and nearly died.