本文主要研究内容
作者赵冲,蔡一冰,黄晓,刘青青,朱晨曦,于姣妲,王正宁,刘博（2019）在《杉木凋落物覆盖对自身幼苗出土和早期生长的影响》一文中研究指出：凋落物可通过物理和化学作用显著影响幼苗出土和早期生长,进而影响天然更新.杉木是中国南方重要的造林树种,但存在着天然更新障碍,其原因可能是林下较厚的凋落物层阻碍了杉木幼苗出土和早期生长.本试验利用覆盖自然和塑料凋落物来研究凋落物对杉木幼苗出土和早期生长的影响,并检验其影响是物理作用还是化学作用.本试验设置2种凋落物类型（自然和塑料凋落物）和4个覆盖厚度(对照,0 g·m-2;浅层,200 g·m-2;中层,400g·m-2;深层,800 g·m-2).结果表明:与对照(0 g·m-2)相比,浅层(200 g·m-2)凋落物覆盖对出苗率有促进作用但不显著,深层(800 g·m-2)凋落物覆盖对出苗率和存活率有显著抑制作用.随着凋落物覆盖厚度的增加,幼苗根长不断减小,而茎长逐渐增加.凋落物浅层覆盖下杉木幼苗的根生物量、叶生物量和总生物量均最大,深层覆盖下最小.幼苗的根冠比随着凋落物覆盖厚度的增加而不断减小.与对照相比,凋落物覆盖下幼苗光合与非光合组织生物量比均有所增加.相同覆盖厚度下,自然和塑料凋落物对杉木幼苗出土和早期生长的影响均无显著差异,表明短期内凋落物覆盖对幼苗出土和早期生长的影响主要是物理作用.随着凋落物覆盖厚度的增加,杉木幼苗出土和早期生长表现为先促进后抑制,且杉木幼苗为了穿过厚厚的凋落物层倾向于把资源分配给地上部分.本研究结果为凋落物是影响杉木幼苗建植和天然更新的一个重要生态因子提供了试验证据.
Abstract
diao la wu ke tong guo wu li he hua xue zuo yong xian zhe ying xiang you miao chu tu he zao ji sheng chang ,jin er ying xiang tian ran geng xin .sha mu shi zhong guo na fang chong yao de zao lin shu chong ,dan cun zai zhao tian ran geng xin zhang ai ,ji yuan yin ke neng shi lin xia jiao hou de diao la wu ceng zu ai le sha mu you miao chu tu he zao ji sheng chang .ben shi yan li yong fu gai zi ran he su liao diao la wu lai yan jiu diao la wu dui sha mu you miao chu tu he zao ji sheng chang de ying xiang ,bing jian yan ji ying xiang shi wu li zuo yong hai shi hua xue zuo yong .ben shi yan she zhi 2chong diao la wu lei xing （zi ran he su liao diao la wu ）he 4ge fu gai hou du (dui zhao ,0 g·m-2;jian ceng ,200 g·m-2;zhong ceng ,400g·m-2;shen ceng ,800 g·m-2).jie guo biao ming :yu dui zhao (0 g·m-2)xiang bi ,jian ceng (200 g·m-2)diao la wu fu gai dui chu miao lv you cu jin zuo yong dan bu xian zhe ,shen ceng (800 g·m-2)diao la wu fu gai dui chu miao lv he cun huo lv you xian zhe yi zhi zuo yong .sui zhao diao la wu fu gai hou du de zeng jia ,you miao gen chang bu duan jian xiao ,er jing chang zhu jian zeng jia .diao la wu jian ceng fu gai xia sha mu you miao de gen sheng wu liang 、xie sheng wu liang he zong sheng wu liang jun zui da ,shen ceng fu gai xia zui xiao .you miao de gen guan bi sui zhao diao la wu fu gai hou du de zeng jia er bu duan jian xiao .yu dui zhao xiang bi ,diao la wu fu gai xia you miao guang ge yu fei guang ge zu zhi sheng wu liang bi jun you suo zeng jia .xiang tong fu gai hou du xia ,zi ran he su liao diao la wu dui sha mu you miao chu tu he zao ji sheng chang de ying xiang jun mo xian zhe cha yi ,biao ming duan ji nei diao la wu fu gai dui you miao chu tu he zao ji sheng chang de ying xiang zhu yao shi wu li zuo yong .sui zhao diao la wu fu gai hou du de zeng jia ,sha mu you miao chu tu he zao ji sheng chang biao xian wei xian cu jin hou yi zhi ,ju sha mu you miao wei le chuan guo hou hou de diao la wu ceng qing xiang yu ba zi yuan fen pei gei de shang bu fen .ben yan jiu jie guo wei diao la wu shi ying xiang sha mu you miao jian zhi he tian ran geng xin de yi ge chong yao sheng tai yin zi di gong le shi yan zheng ju .
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论文作者分别是来自应用生态学报的赵冲,蔡一冰,黄晓,刘青青,朱晨曦,于姣妲,王正宁,刘博，发表于刊物应用生态学报2019年02期论文，是一篇关于森林更新论文,人工林论文,塑料凋落物论文,物理作用论文,生物量分配论文,应用生态学报2019年02期论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自应用生态学报2019年02期论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：森林更新论文; 人工林论文; 塑料凋落物论文; 物理作用论文; 生物量分配论文; 应用生态学报2019年02期论文;