{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,6]],"date-time":"2026-03-06T05:23:17Z","timestamp":1772774597912,"version":"3.50.1"},"reference-count":15,"publisher":"Editorial CSIC","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["For. syst."],"abstract":"<jats:p>Aim of study: The aim of the work was to develop an individual tree diameter-increment model for Thuya (Tetraclinis articulata) in Tunisia.Area of study: The natural Tetraclinis articulata stands at Jbel Lattrech in north-eastern of Tunisia.Material and methods:\u00a0 Data came from 200 trees located in 50 sample plots. The diameter at age t and the diameter increment for the last five years obtained from cores taken at breast height were measured for each tree. Four difference equations derived from the base functions of Richards, Lundqvist, Hossfeld IV and Weibull were tested using the age-independent formulations of the growth functions. Both numerical and graphical analyses were used to evaluate the performance of the candidate models.Main results: Based on the analysis, the age-independent difference equation derived from the base function Richards model was selected. Two of the three parameters (growth rate and shape parameter) of the retained model were related to site quality, represented by a Growth Index, stand density and the basal area in larger trees divided by diameter of the subject tree expressing the inter-tree competition.Research highlights: The proposed model can be useful for predicting the diameter growth of Tetraclinis articulata in Tunisia when age is not available or for trees growing in uneven-aged stands.Keywords: Age-independent growth model; difference equations; Tetraclinis articulata; Tunisia.<\/jats:p>","DOI":"10.5424\/fs\/2013223-03511","type":"journal-article","created":{"date-parts":[[2013,11,28]],"date-time":"2013-11-28T11:00:01Z","timestamp":1385636401000},"page":"433-441","source":"Crossref","is-referenced-by-count":5,"title":["Distance-independent individual tree diameter-increment model for Thuya [Tetraclinis articulata (VAHL.) MAST.] stands in Tunisia"],"prefix":"10.5424","volume":"22","author":[{"given":"T.","family":"Sghaier","sequence":"first","affiliation":[]},{"given":"M.","family":"Tome","sequence":"additional","affiliation":[]},{"given":"J.","family":"Tome","sequence":"additional","affiliation":[]},{"given":"M.","family":"Sanchez-Gonzalez","sequence":"additional","affiliation":[]},{"given":"I.","family":"Ca\u00f1ellas","sequence":"additional","affiliation":[]},{"given":"R.","family":"Calama","sequence":"additional","affiliation":[]}],"member":"2373","published-online":{"date-parts":[[2013,12,1]]},"reference":[{"key":"ref1","volume-title":"Biology and wildlife of the Mediterranean region","author":"Blondel","year":"1999","unstructured":"Blondel J, Aronson J, 1999. Biology and wildlife of the Mediterranean region. 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Direction G\u00e9n\u00e9rale des For\u00eats. 88 pp."},{"key":"ref5","doi-asserted-by":"crossref","first-page":"631","DOI":"10.14214\/sf.319","article-title":"Site quality curves for birch stands in north-western Spain.","volume":"40","author":"Di\u00e9guez-Aranda","year":"2006","unstructured":"Di\u00e9guez-Aranda U, Grandas-Arias, JA, \u00c1lvaraz-Gonz\u00e1lez JG, Gadow Kv, 2006. Site quality curves for birch stands in north-western Spain. Silva Fennica 40: 631-644.","journal-title":"Silva Fennica"},{"key":"ref6","volume-title":"Monograph of Cupressaceae and Sciadopitys","author":"Farjon","year":"2005","unstructured":"Farjon A, 2005. Monograph of Cupressaceae and Sciadopitys. Royal Botanic Gardens, Kew."},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.1139\/X07-142"},{"key":"ref8","first-page":"64","article-title":"On the height growth in cultivated stands of pine and spruce in Northern Sweden [In Swedish: Om H\u00f6jdutveck-lingrn i kulturbestand av tall och gran i Norrland]. Medd.","volume":"47","author":"Lundqvist","year":"1957","unstructured":"Lundqvist B, 1957. On the height growth in cultivated stands of pine and spruce in Northern Sweden [In Swedish: Om H\u00f6jdutveck-lingrn i kulturbestand av tall och gran i Norrland]. Medd. Skogsforskn Inst 47: 64.","journal-title":"Skogsforskn Inst"},{"key":"ref9","first-page":"627","article-title":"Perfecting a stand-density index for evenaged forests.","volume":"46","author":"Reineke","year":"1933","unstructured":"Reineke LH, 1933. Perfecting a stand-density index for evenaged forests. J Agric Res 46: 627-638.","journal-title":"J Agric Res","ISSN":"https:\/\/id.crossref.org\/issn\/0095-9758","issn-type":"print"},{"key":"ref10","volume-title":"Guide pour le choix des esp\u00e8ces de reboisement esp\u00e8ces foresti\u00e8res et pastorales","author":"Rejeb","year":"1996","unstructured":"Rejeb MN, Khaldi A, Khouja ML, Garchi S, Ben Mansoura A, Nouri M, 1996. Guide pour le choix des esp\u00e8ces de reboisement: esp\u00e8ces foresti\u00e8res et pastorales. INGREF. 137 pp."},{"key":"ref11","doi-asserted-by":"publisher","DOI":"10.1093\/jxb\/10.2.290"},{"key":"ref12","volume-title":"Trees of Britain and Europe","author":"Rushforth","year":"1999","unstructured":"Rushforth K, 1999. Trees of Britain and Europe. Collins."},{"key":"ref13","volume-title":"SAS\/ETS\u00ae 9 1 User s Guide","year":"2004","unstructured":"SAS Institute Inc, 2004. SAS\/ETS\u00ae 9.1 User's Guide. Cary, NC, SAS Institute Inc."},{"key":"ref14","doi-asserted-by":"publisher","DOI":"10.1139\/x06-065"},{"key":"ref15","doi-asserted-by":"publisher","DOI":"10.1051\/forest:2004034"}],"container-title":["Forest Systems"],"original-title":[],"link":[{"URL":"https:\/\/fs.revistas.csic.es\/index.php\/fs\/article\/download\/3511\/1944","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/fs.revistas.csic.es\/index.php\/fs\/article\/download\/3511\/1944","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,5,13]],"date-time":"2024-05-13T12:53:39Z","timestamp":1715604819000},"score":1,"resource":{"primary":{"URL":"https:\/\/fs.revistas.csic.es\/index.php\/fs\/article\/view\/3511"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2013,12,1]]},"references-count":15,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2013,11,28]]}},"URL":"https:\/\/doi.org\/10.5424\/fs\/2013223-03511","relation":{},"ISSN":["2171-9845","2171-5068"],"issn-type":[{"value":"2171-9845","type":"electronic"},{"value":"2171-5068","type":"print"}],"subject":[],"published":{"date-parts":[[2013,12,1]]}}}