文献类型：期刊文献

英文题名：Evaluation of potential versus realized site productivity of Larix principis- rupprechtii plantations across northern China

作者：Liu, Xianzhao[1] Duan, Guangshuang[1,2] Chhin, Sophan[3] Lei, Xiangdong[1] Wang, Dongzhi[4] Zhang, Xiongqing[5]

第一作者：刘宪钊

通信作者：Zhang, XQ[1]

机构：[1]Chinese Acad Forestry, Res Inst Forest Resource Informat Tech, Key Lab Forest Management & Growth Modelling, NFGA, Beijing 100091, Peoples R China;[2]Xinyang Normal Univ, Xinyang 464000, Peoples R China;[3]West Virginia Univ, Div Forestry & Nat Resources, 322 Percival Hall,1145 Evansdale Dr, Morgantown, WV 26506 USA;[4]Hebei Agr Univ, Baoding 071000, Peoples R China;[5]Chinese Acad Forestry, Res Inst Forestry, Beijing 100091, Peoples R China

年份：2021

卷号：479

外文期刊名：FOREST ECOLOGY AND MANAGEMENT

收录：;EI(收录号：20203909224263);Scopus(收录号：2-s2.0-85091247213);WOS:【SCI-EXPANDED(收录号:WOS:000592033000007)】；

基金：The authors are grateful to the National Key Research and Development Plan of China (No. 2017YFD060040302).

语种：英文

外文关键词：Potential productivity; Realized productivity; Stand volume increment; Available growing space; Larix principis-rupprechtii

摘要：Site quality evaluation is a fundamental component of forest management and is also vitally important towards improved understanding of forest growth processes and optimizing silviculture practices. However, most site quality studies have focused on site index which cannot predict potential site productivity. In this study, a methodology that incorporates volume-related potential increment which accounts for optimal stand density index was used for site productivity assessment of Larix principis-rupprechtii plantations across Northern China. Based on 152 permanent sample plots, the models of potential and realized productivity of L. principis-rupprechtii plantation were established, and percentage of available growing space close to potential productivity in different regions were analyzed in different site classes. Growth models of stand dominant height and volume were developed by site classes based on biological and statistical rationality. The potential productivity was between 3.93 m(3)/ha/year and 6.84 m(3)/ha/year. The realized productivity was always lower than potential productivity, and the gaps between the two types of productivity measures decreased with increasing stand age. The available growing space percentage of volume productivity was between 0% and 94.52%, and this was higher in stands in the middle and young stage of stand development compared to the mature stage. The available growing space increased with the decline of site class. The values of potential productivity and available growing space could be used to effectively assess forest site productivity, and also provide highly reliable and valuable information for L. principis-rupprechtii plantation management.