The Legislature finds and declares that the existing boundaries of some counties no longer meet the needs of their residents and landowners. The Legislature further finds and declares that the statutory procedures for altering county boundaries which existed before the enactment of this article were cumbersome and discouraged county boards of supervisors from adjusting their mutual boundaries. In enacting this article, it is the intent of the Legislature to permit county boards of supervisors to approve changes to the boundaries of their counties. This article shall be deemed a uniform procedure for county boundary change as required by Section 1 of Article XI of the California Constitution.