{"code":"PRC","codeName":"Public Resources Code","section":"4528","citation":"Pub. Resources Code, § 4528","status":"in-force","lawOn":"2026-09-28","headings":[{"name":"DIVISION 4. FORESTS, FORESTRY AND RANGE AND FORAGE LANDS [4001. - 4958.]","url":"https://blackletter.si/public-resources-code/division-4"},{"name":"PART 2. PROTECTION OF FOREST, RANGE AND FORAGE LANDS [4101. - 4789.7.]","url":"https://blackletter.si/public-resources-code/division-4/part-2"},{"name":"CHAPTER 8. Z'berg-Nejedly Forest Practice Act of 1973 [4511. - 4630.2.]","url":"https://blackletter.si/public-resources-code/division-4/part-2/chapter-8"},{"name":"ARTICLE 2. Definitions [4521. - 4529.5.]","url":"https://blackletter.si/public-resources-code/division-4/part-2/chapter-8/article-2"}],"history":"Amended by Stats. 1978, Ch. 1181.","effective":null,"html":"<p>As used in this chapter:</p><p>(a) “Basal area per acre” means the sum of the cross-sectional areas at breast height of the tree stems of commercial species per acre.</p><p>(b) “Countable tree” means a tree that can be used in calculating the degree of stocking under the following criteria:</p><p>(1) The tree must be in place at least two growing seasons.</p><p>(2) The tree must be live and healthy.</p><p>(3) The tree must have at least one-third of its length in live crown, except in pure stands of Douglas fir the tree must have at least one-fourth of its length in live crown.</p><p>(4) The tree must be a commercial species from a local seed source or a seed source which the registered professional forester determines will produce commercial trees physiologically suited for the area involved.</p><p>(c) “Stocking” means a measure of the degree to which space is occupied by well-distributed countable trees.</p><p>(d) “Site classification” means the classification of productive potential of timberland into one of five classes by board regulation, consistent with normally accepted forestry practices. Site I shall denote sites of highest productivity, site II and site III shall denote sites of intermediate productivity potential, and site IV and site V shall denote sites of lowest productivity potential. </p><p>(e) “Fuel break” means a strip of modified fuel to provide a line from which to work in the control of fire.</p><p>(f) “Stream” means a natural watercourse as designated by a solid line or dash and three dots symbol shown on the largest scale United States Geological Survey map most recently published.</p>","text":"As used in this chapter: (a) “Basal area per acre” means the sum of the cross-sectional areas at breast height of the tree stems of commercial species per acre. (b) “Countable tree” means a tree that can be used in calculating the degree of stocking under the following criteria: (1) The tree must be in place at least two growing seasons. (2) The tree must be live and healthy. (3) The tree must have at least one-third of its length in live crown, except in pure stands of Douglas fir the tree must have at least one-fourth of its length in live crown. (4) The tree must be a commercial species from a local seed source or a seed source which the registered professional forester determines will produce commercial trees physiologically suited for the area involved. (c) “Stocking” means a measure of the degree to which space is occupied by well-distributed countable trees. (d) “Site classification” means the classification of productive potential of timberland into one of five classes by board regulation, consistent with normally accepted forestry practices. Site I shall denote sites of highest productivity, site II and site III shall denote sites of intermediate productivity potential, and site IV and site V shall denote sites of lowest productivity potential. (e) “Fuel break” means a strip of modified fuel to provide a line from which to work in the control of fire. (f) “Stream” means a natural watercourse as designated by a solid line or dash and three dots symbol shown on the largest scale United States Geological Survey map most recently published.","otherVersions":[],"url":"https://blackletter.si/public-resources-code/definitions-4528","source":"California Legislative Information bulk export (pubinfo)"}