N.J. Stat. Ann. § 54A:3-6

1. A taxpayer shall be allowed a deduction against gross income for a qualified conservation contribution, as defined under subsection (h) of section 170 of the federal Internal Revenue Code of 1986, 26 U.S.C. s.170, made by the taxpayer of a qualified real property interest in property located in this State. The amount of the deduction in a taxable year shall be equal to the amount of the contribution allowed in the taxable year as a deduction pursuant to section 170 of the federal Internal Revenue Code of 1986 in computing the taxpayer's taxable income for federal income tax purposes.