N.M. Stat. § 16-2-29
The state park and recreation division [state parks division] of the energy, minerals and natural resources department may pledge for the retirement of bonds issued all or any part of the revenues to be produced from any project to be constructed with bond funds, all or any part of the governmental gross receipts tax distributions pursuant to Section 7-1-6.38 NMSA 1978, appropriated to the energy, minerals and natural resources department for state park and recreation area capital improvements and, except as may be prohibited by existing contractual arrangements, may also pledge money derived from the operation of present or future state parks or recreation areas or from gifts, donations, bequests or endowments for state park or recreation purposes or any portion of the same. Bonds are payable solely from the funds enumerated in this section and are not general obligations of the state.
NMS § 16-2-29