[Calculating critical loads of acid deposition with different percentiles in China]

While mapping critical loads of acid deposition in China, the 1 degree (latitude) x 1 degree (longitude) resolution was always adopted in critical load calculation. However, the results of mapping can not show the difference of sensitivity of ecosystems to acid deposition within a 1 degree x 1 degree grid. For the convenience of policy-makers to formulate acid deposition control strategies based on critical loads, and to improve the representation and practicability of 1 degree x 1 degree results, a series of critical load maps with different percentiles were compiled, which may be accordance with a given economic or technological level, and allows some degree of damage. Based on the cumulative distribution function, the critical load exceedance maps with different percentiles and the maximum allowable deposition of each province was also derived.