China's gross domestic product (GDP) growth unexpectedly slowed to 7.7 percent in the first quarter of 2013, down from 7.9 percent during the final quarter of 2012, data from the National Bureau of Statistics (NBS) showed on Monday.

The rate was weaker than most market forecasts, but still stayed above the 7.5-percent full-year target for 2013 set by the government last month.

According to preliminary statistics, the GDP totaled 11.89 trillion yuan (1.9 trillion US dollars) in the first three months.

"The fall-back in growth was mainly caused by complex international circumstances and the government's self-initiated microeconomic control," said NBS spokesman Shen Laiyun at a press conference in Beijing. He noted that growth rates between 7.4 percent and 7.9 percent were normal.

Increases in urban new jobs and the number of new migrant workers in the first quarter showed a favorable situation of employment, which is a key index for the health of an economy, Sheng said.

The GDP data, the first of its kind after the new government took office in March, have attracted wide market attention. Chinese Premier Li Keqiang said last week that China's economic operation has been generally stable so far this year.

While effectively dealing with short-term issues and keeping reasonable growth, the government should focus more on promoting the transformation of the economy's growth pattern, the premier said.

China's full-year annual growth in 2012 eased to 7.8 percent, its weakest since 1999, due to volatile external markets and the government's domestic tightening to tame property prices and inflation.

"The data have continued a stabilizing growth trend that took shape late last year, showing that the new government does not put pursuing growth as its number-one task," said Wang Jun, an economist at the China Center for International Economic Exchanges.

The 7.9-percent growth seen in the fourth quarter of last year, which ended a seven-straight-quarter slowdown, had then prompted strong expectations for the rebound to continue this year.

The first-quarter growth fell short of market expectations due to slowed infrastructure construction during the cold winter and unstable export growth. A government frugality campaign, which targets to combat corruption, has undermined consumption growth, Wang said.

The recently renewed government property control has also affected investment in the real estate sector, which once served as an important driver of the economy.

The government has been cautious in introducing policies to spur the economy for fear that a massive stimulus package like the one in 2008 crisis would retrigger inflation. It stopped cutting interest rates late last year and resorted to increasing construction investment to shore up growth.

Because the government has said it will work to make real growth in tandem with the potential rate, which is estimated to be dropping from around 10 percent to 7-8 percent, there is no need for a strong government push, said Zhang Liqun, an analyst from the Development Research Center of the State Council.

"The economy's future growth rates are likely to stay between 7.5 and 8 percent, with the rates in a state of fluctuation rather than continued rises," Zhang said.

But most economists projected slightly higher growth in the second quarter as more measures will be introduced from the new government.

Liu Yuanchun, an economist with Renmin University of China, said that the government should focus on promoting urbanization and tax reduction to prop up the economy in the short term and deepen its political and economic reforms to seek long-term development.

Other data released along with the GDP figures on Monday showed that industrial output grew 9.5 percent year on year in the first quarter, down from 11.6 percent recorded last year. Investment in property development grew 20.2 percent, down 3.3 percentage points from a year earlier.

The growth of fixed-asset investment, a measure of government spending on infrastructure, remained unchanged at 20.9 percent compared to a year earlier. Retail sales, a key indicator of consumer spending, rose 12.4 percent, easing from the 14.8-percent pace logged last year.