文献类型：期刊文献

英文题名：Changes of Tamarix austromongolica forests with embankment dams along the Laizhou bay

作者：Yang, Hongxiao[1] Liu, Fangfang[1] Liu, Xinwei[1] Zhou, Zhenfeng[1] Pan, Yanxia[1] Chu, Jianmin[1,2,3]

第一作者：Yang, Hongxiao

通信作者：Chu, JM[1];Chu, JM[2];Chu, JM[3]

机构：[1]Qingdao Agr Univ, Qingdao, Peoples R China;[2]Chinese Acad Forestry, Expt Ctr Desert Forestry, Dengkou, Inner Mongolia, Peoples R China;[3]Chinese Acad Forestry, Res Inst Forestry, Coastal Forestry Res Ctr, Natl Forestry & Grassland Adm, Beijing, Peoples R China

年份：2024

卷号：12

外文期刊名：PEERJ

收录：;Scopus(收录号：2-s2.0-85202211907);WOS:【SCI-EXPANDED(收录号:WOS:001299108600003)】；

基金：This work was supported by the National Science Foundation (32171868) and Fundamental Research Funds of CAF (CAFYBB2020SZ001-3) . The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

语种：英文

外文关键词：Disaster relief; Embankment dam; Storm surge; Coastal conservation; Natural vegetation; Shrub

摘要：Background. Embankment dams were built south of the Laizhou bay in China for controlling storm surge disasters, but they are not enough to replace coastal forests in protecting the land. This study was designed to evaluate the effects of embankment dams on natural forests dominated by Tamarix austromongolica and test whether the dam-shrub system is a preferable updated defense. Methods. Coastal forests on two typical flats, one before and one behind embankment dams, were investigated using quadrats and lines. Land bareness, vegetation composition and species co-occurrence were assessed; structures of T. austromongolica populations were evaluated; and spatial patterns of the populations were analyzed using Ripley's K and K-1,K-2 functions. Results. In the area before embankment dams, 84.8% of T. austromongolica were juveniles (basal diameter <= 3 cm), and 15.2% were adults (basal diameter > 3 cm); behind the dams, 52.9% were juveniles, and 47.1 were adults. In the area before the dams, the land bareness was 13.7%, four species occurred, and they all were ready to co-occur with T. austromongolica; behind the dams, the land bareness was 0%, and 16 species occurred whereas they somewhat resisted co-occurrence with T. austromongolica. In the area before the dams, the T. austromongolica population was aggregated in heterogeneous patches, and the juveniles tended to co-occur with the adults; behind the dams, they were over-dispersed as nearly uniform distributions, while the juveniles could recruit and were primarily independent of the adults. These results indicate that the T. austromongolica species did not suffer from the unnatural dams, but benefited somehow in population expansion and development. Overall, the T. austromongolica species can adapt to artificial embankment dams to create a synthetic defense against storm surges.