There are no words to describe the size of China’s foreign exchange reserves. Massive, Mind-Boggling, and Eye-Popping come to mind, but don’t do the $2.447 Trillion justice. What’s more, this figure represents the end of March; the current total has almost certainly surpassed $2.5 Trillion.

Interesting, the rate of reserve accumulation has slowed markedly from 2009. In the first quarter of 2010, the reserves grew by “only” $45 Billion, compared to growth of $125 Billion in the fourth quarter of 2009. There are a couple key explanations for this slowing. First, China’s trade balance has narrowed considerably over the last twelve months, to the point that it in March, it recorded its first trade deficit in six years. Second, China tallies its reserve growth on a net basis – after accounting for changes in valuation. Given that the majority of China’s reserves are still denominated in US Dollars, then, the Dollar’s appreciation over the last quarter may have shaved $40 Billion from the accumulation of new reserves. With this in fact in mind, the actual slowdown is probably much less pronounced than the numbers would suggest.

Besides, exports and foreign direct investment both continue to grow at healthy clips, which means there is nothing (barring a revaluation of the RMB) which could significantly slow reserve accumulation going forward. Even with a revaluation (that many experts believe is imminent), the need to further accumulate reserves will not be impacted, because the RMB will certainly continue to be pegged to the US Dollar. In order to prevent price inflation (which is already creeping up) from reaching dangerously high levels, then, the government will have no choice but to continue to soak up all capital inflows for as long as the RMB remains pegged.

Speaking of revaluation, the unchecked growth of China’s forex reserves would seem to strengthen the case for it. As the WSJ analysis showed, the value of China’s portfolio of reserves has fluctuated wildly over the last five years due both to gyrations on the capital markets and volatility in forex markets. In fact, China has lost a massive $70 Billion due to such volatility since 2003. In short, this program of accumulating reserves is not only a massive headache, but also a losing proposition.

Experts estimate that more than 2/3 is still denominated in USD. Since the Chinese RMB is also pegged to the Dollar, that means that as the RMB appreciates against the Dollar, the value of its reserves will fall in local currency terms. Rectifying this problem is basically impossible, as the EU sovereign debt crisis has demonstrated. It has looked into the possibility of investing in alternative assets such as Gold, Oil, and other commodities but there is simply not enough global supply to soak up more than a small fraction of China’s $2.5 Trillion. For all of the problems with the Dollar, the alternatives are just as bad, if not worse. At this point, the best China can hope for is to “cut its losses” by revaluing sooner rather than later.