Image copyright Getty Images Image caption Margaret Chan, director-general of the World Health Organization, is the second-highest-ranking Chinese woman on the Forbes list

Chinese women have made their strongest showing on Forbes magazine's list of the world's most powerful women.

The survey also included a record number of women from the UK, though German Chancellor Angela Merkel remains in the top spot.

Hillary Clinton, the US presidential candidate, and Janet Yellen, chair of the Federal Reserve, were second and third.

The US dominated the list with 51 women represented, while China was second.

There are a record nine women from the world's most populous nation on the 2016 Power Women list. Lucy Peng, a senior executive at e-commerce giant Alibaba, and Margaret Chan, director-general of the World Health Organization, are the highest-ranked. Also on the list are Pollyanna Chu, chief executive of Hong Kong financial services firm Kingston Securities, and China's first lady, Peng Liyuan.

Image copyright Getty Images Image caption Yahoo chief executive Marissa Mayer, 41, is the youngest woman on the Forbes list

Image copyright Getty Images Image caption Nicola Sturgeon, leader of the Scottish National Party, makes her first appearance in the rankings

The survey features 100 women from 29 countries who represent sectors such as politics, business, technology and philanthropy.

Forbes said the women on the list control $1tn (£694bn) in revenue and influence more than 3.6bn people around the world.

There are 32 chief executives on the list, 12 world leaders and 11 billionaires, including nine who have built billion-dollar companies from scratch. The average age is 57, with Yahoo chief executive Marissa Mayer the youngest at 41 and Britain's Queen Elizabeth II the oldest at 90.

The number of UK women who made the rankings doubled to six. Besides Queen Elizabeth, they include Nemat Shafik, deputy governor of the Bank of England, and Katharine Viner, editor of the Guardian. The newcomers are Nicola Sturgeon, Scotland's First Minister, Zanny Minton Beddoes, editor of the Economist, and Eliza Manningham-Buller, chair of the Wellcome Trust.

'Extraordinary'

This is the sixth consecutive year Mrs Merkel has topped the list and the tenth time in total.

Moira Forbes, president and publisher of Forbes Woman, said it was "extraordinary" that Mrs Merkel had been able to maintain power for so long.

"She's not only the head of the fourth largest economy in the world but she's defied existential political and economic challenges to the EU, for example trying to ensure that countries like Greece and Spain adhere to the fiscal logic she espouses," she told BBC News. "She's also dealing with EU crises such as immigration...She's someone whose power extends far beyond traditional borders."

Ms Forbes noted that nearly half of the women on this year's list were from outside the US, while a quarter were from the Asia-Pacific region, the highest number since the survey's inception. "These are positive trends as women are ascending more into positions of traditional business corporate power but also political power," she said.

Image copyright Getty Images Image caption Former Brazilian president Dilma Rouseff dropped off the list

Among the most high-profile drop-offs is Dilma Rousseff, the former president of Brazil, who was impeached in May over allegations of violating fiscal rules, which she denies.

Elizabeth Holmes, founder of the blood-testing firm Theranos, also failed to make the list. US federal agencies are investigating Theranos over allegations its tests are inaccurate. Last week, Forbes lowered its estimate of Holmes' personal fortune from $4.5bn to nothing, after previously declaring her America's richest self-made woman.