The US and China have agreed that neither government would support or conduct cyber-enabled theft of intellectual property, the White House said Friday.

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The Obama administration said that both countries are committed to finding appropriate norms of state behavior in cyberspace within the international community.

In a separate Friday statement released ahead of a joint press conference, US President Barack Obama and Chinese President Xi Jinping outlined their common vision for a global climate change agreement, and outlined new steps they will take to deliver on pledges made last year to slash their greenhouse gas emissions.

Those included confirmation by Xi that China will launch a national carbon cap-and-trade system in 2017 to help contain the country's emissions, which will build on seven regional pilot markets already operation in China. Such systems put limits on carbon emissions and open up markets for companies to buy and sell the right to produce emissions.

The joint presidential statement was a highlight of a state visit to Washington by Xi. It built on a bilateral announcement on climate change last November, when the United States pledged to reduce its greenhouse gas emissions 26 to 28 percent below 2005 levels by 2025, while China agreed to cap its rising emissions by at least 2030.

The statement aimed to show "the determination of both countries to act decisively to achieve the goals set last year."

China is already the world's largest carbon emitter, but its status as a developing country has meant it is under no obligation to promise carbon cuts, a situation that has irked US politicians and other industrialized nations.

For Obama, securing a new global agreement on climate change that erases some of the divisions between industrialized and emerging economies is a key priority. The deal with China strengthens his hand ahead of a global summit on climate change in Paris in December.

China's proposed cap-and-trade system would create the world's biggest carbon market. Democratic lawmakers tried to pass legislation to create such a system in the United States but it failed to win enough votes in a divided Senate in 2010.

China also announced on Friday that it would channel 20 billion RMB ($3.1 billion) to help developing countries combat and adapt to climate change, a significant financial pledge from an emerging economy.

For its part, Washington reaffirmed a pledge it made last year to channel $3 billion into a UN-backed Green Climate Fund. But Congressional wrangling over the federal budget threatens to delay the implementation of the pledge.

The two countries also agreed on the need for an "enhanced transparency system" in a United Nations climate agreement to ensure trust and confidence in the framework to be agreed in Paris in December.

They also said a new global climate deal should require countries to "ramp up" their national emission reduction commitments periodically.

Beyond climate issues, major topics of recent discussion concerning the bilateral relationship include economic reform and military-to-military cooperation.

The primary areas of contention in the relationship, however, are geopolitical concerns — including China's island-building in the South China Sea, and the US military presence in the region — and cybersecurity issues.

There had been some suggestion that the two presidents could announce an agreement to not hack each other's critical infrastructure during peacetime, but experts told CNBC that the real problem for the US is China's corporate cybertheft.

The Obama administration had hinted at sanctions against China for those cyber-espionage activities before Xi's visit, but none were announced. Beijing, for its part, has denied any such digital offensives.

In officially welcoming Xi to the White House, Obama reflected on "a history of friendship and cooperation" between the two countries," and welcomed the rise of a peaceful and prosperous China.

First Published:Sept 25, 2015 10:00 PM IST