JK Lakshmi Cement last week posted a marginal decline in net profit at Rs 30.30 crore for the fourth quarter ended March 31, 2012, on higher provisioning for depreciation. The cement maker had posted a net profit of Rs 31.96 crore in the year-ago period.JK Lakshmi Cement whole-time director Shailendra Chouksey said that during the current quarter, the company has changed with retrospective effect, the method of providing depreciation on captive power plants. This change resulted in an additional depreciation charge of Rs 63.68 crore, he added.Total income from operations of the company, which sold 14.16 lakh tonne cement during the reporting quarter, rose to Rs 526.73 crore against Rs 417.16 crore a year-ago. JK Lakshmi Cement sold 12.55 lakh tonne cement in January-March, 2010-11.