文献类型：期刊文献

英文题名：Sprout Regeneration of Shrub Willows after Cutting

作者：Zou, Yang[1,2];Li, Xiaoping[1,2];Yang, Guo[1,2,3]

机构：[1]Nanjing Forestry Univ, Coll Forest, Key Lab Tree Genet & Biotechnol Jiangsu Prov, Nanjing 210000, Peoples R China;[2]Nanjing Forestry Univ, Coll Forest, Educ Dept China, Nanjing 210000, Peoples R China;[3]Shaoxing Univ, Sch Life Sci, Shaoxing 312000, Peoples R China

年份：2020

卷号：9

期号：12

起止页码：1

外文期刊名：PLANTS-BASEL

收录：SCI-EXPANDED(收录号：WOS:000602296600001)、、Scopus(收录号：2-s2.0-85097177878)、WOS

基金：The work was supported by the National Key Research and Development Plan of China (2016YFD0600101) and the National Natural Science Foundation of China (31570662 and 31500533). It was also enabled by the priority academic program development at Nanjing Forestry University.

语种：英文

外文关键词：stump size; sprout regeneration; biomass; short-rotation coppice; willow

外文摘要：Shrub willow (Salix L. spp.) is a promising bioenergy resource crop due to its high growth rates and superb regenerative ability. Sprouting capacity is influenced by many factors, such as parent tree species and size, which are important limiting factors for stump survival or sprout growth. In this study, we aimed to quantify the survival and regeneration performance of sprouts (including sprout height, sprout diameter, sprout number, leaf morphological traits, leaf chlorophyll content, and ground part dry biomass) from the stumps of two Salix species from three diameter classes (10-15, 16-19, and 20-30 mm). An attempt was made to explore why the stump size affects the regeneration of willows by analyzing the carbon and nitrogen proportion of stumps. Stump survival did not differ between the two Salix species. However, the sprout regeneration of S. triandra was much better than that of S. suchowensis. An increase in stump diameter caused increases in the number of sprouts produced per stump, the mean height and basal diameter of sprouts per stump, the leaf chlorophyll content, and the biomass of sprouts per stump. By contrast, stump diameter did not significantly affect stump survival. The results indicate that the larger stumps store more carbon and nitrogen than small-sized stumps, which may be one of the reasons why the larger willow stumps have a stronger resprouting ability. This study provides essential information regarding the sprout regeneration of short-rotation coppice willow plantations after harvest.