(Adds detail on volumes in final 2 paragraphs, updates prices)
* FTSEurofirst 300 up 2.5 pct
* Syngenta surges on sign of better Monsanto offer
* FTSEurofirst still set for worst month since 2002
* Chinese shares slump again
* Goldman Sachs strategists cut equities position
By Sudip Kar-Gupta
LONDON, Aug 25 (Reuters) - European shares rose on Tuesday, recovering some poise after a sharp sell-off the previous day on concerns about China's economy that saw around 450 billion euros ($520 billion) wiped off the value of leading stocks.
The pan-European FTSEurofirst 300 index, which slumped 5.4 percent on Monday, rose 2.5 percent, while the euro zone's blue-chip Euro STOXX 50 index gained 2.3 percent.
Swiss agricultural chemicals maker Syngenta was the best-performing FTSEurofirst stock, rising 7.5 percent after a source said Monsanto had sweetened a takeover.
The FTSEurofirst remains at risk of posting its biggest monthly loss since 2002, having fallen more than 10 percent so far in August.
Germany's DAX rose 2.3 percent after a near 5 percent decline on Monday, leaving it still nearly 20 percent below a record high reached in April.
World financial markets have been rattled by a sharp sell-off in the Chinese stock market that followed the devaluation of the yuan earlier this month.
Chinese shares slumped again on Tuesday, while Japan's Nikkei fell nearly 4 percent.
"European equity markets are showing hesitant signs of trying to stage an early rebound," said Peregrine & Black senior sales trader Markus Huber.
"However, with Chinese markets getting hit once again today and overall confidence in markets being fairly low, it needs to be seen if the current bounce is only of a temporary nature or if we have indeed finally seen the lows of the current down-move."
Goldman Sachs' strategists cut their position on equities to 'neutral' from 'overweight' due to the impact of the drop in China, though they did not expect the sell-off to cause a global recession, partly due to signs of economic growth in the United States and Europe.
"In the meantime, we recognize the shift in sentiment that is being reflected in recent price action both in equities and, via falling inflation expectations, in bonds," they wrote in a note.
Trading volumes on European stock markets had surged on Monday to their highest level in nearly a year.
However, volumes were more subdued on Tuesday, with those on the Euro STOXX 50 and DAX coming in below their 3-month daily averages.
($1 = 0.8642 euros)
Europe bourses in 2015: link.reuters.com/pap87v
Asset performance in 2015: link.reuters.com/gap87v
Today's European research round-up (Editing by John Stonestreet, Andrew Heavens)