文献类型：期刊文献

中文题名：林窗面积、年龄对赣中南杉木低效林灌草物种多样性和碳储量的影响

英文题名：Effect of forest gap area and age on species diversity and carbon storage of shrub and herbaceous layers of low-function Cunninghamia lanceolata forests in Mid-South Jiangxi,China

作者：袁媛[1] 姚甲宝[1] 徐克芹[1] 肖斌[1] 丁颖[1] 欧阳琼[1] 蔡宗明[1] 丁业新[1]

第一作者：袁媛

机构：[1]中国林业科学研究院亚热带林业实验中心,生物多样性保护与资源利用江西省重点实验室,分宜336600

年份：2025

卷号：31

期号：8

起止页码：1272-1283

中文期刊名：应用与环境生物学报

外文期刊名：Chinese Journal of Applied and Environmental Biology

收录：;北大核心:【北大核心2023】；

基金：中央级公益性科研院所基本科研业务费专项资金项目(CAFYBB2020ZB002);江西省自然科学基金项目(20232BAB205047);江西省2023年度中央财政林业科技推广示范项目(JXTG[2023]05号)资助。

语种：中文

中文关键词：林窗;杉木;低效林;物种多样性;碳储量

外文关键词：gap;Cunninghamia lanceolata;low-function forest;species diversity;carbon storage

分类号：S718.5

摘要：研究林窗对物种多样性和碳储量的动态影响,对揭示林窗在物种更新、生态恢复和碳汇林业发展等方面的作用具有重要意义.以赣中南丘陵地区的杉木低效林为研究对象,通过分析不同面积[林窗面积为:≤50 m2(小林窗)、50-100 m2(中林窗)、100-150 m2(大林窗)]和不同年龄(林窗形成时间:45年、30年、15年和4年)林窗以及非林窗对照(CK)的灌草物种多样性水平(物种丰富度指数R、Simpson优势度指数D、Shannon-Wiener多样性指数H、Pielous均匀度指数Jsw)和碳储量差异,阐明林窗面积、年龄对林下灌草物种多样性和碳储量的影响特征.结果显示:(1)在调查的不同面积和不同林龄林窗的灌、草样方中,共记录到植物125种,隶属66科108属.(2)林窗干扰对群落物种多样性水平的提高具有促进作用,R、H值高于CK且在各林窗间差异显著(P<0.05),D值低于CK、Jsw值高于CK但在各林窗间无显著差异,总的来看,大林窗和45年林窗的物种多样性水平最高.(3)林窗内灌草碳储量显著高于CK,45年林窗下灌草层的碳储量最高.(4)林窗面积对灌草物种多样性存在显著影响,林窗年龄对灌草物种多样性和草本层碳储量存在显著影响,林窗面积和林窗年龄交互作用仅对草本层R值存在极显著影响(P<0.01).可见,林窗干扰对促进林下物种更新和增加碳储量具有重要作用;100-150 m2林窗和45年林窗为提高杉木低效人工林灌草物种多样性和碳储量水平的最适宜林窗面积和年龄.(图5表4参43)
Studying the dynamic effects of gaps on species diversity and carbon storage is crucial to reveal the role of gaps in species regeneration,ecological restoration,and carbon sink forestry.In this study,we analyzed the differences in species diversity(the species richness index(R),Simpson dominance index(D),Shannon-Wiener diversity index(H),and Pielous evenness index(Jsw))and carbon storage of shrub and herbaceous layers across 48 pairs of different areas(the forest gap area is:≤50 m2(small forest gap),50-100 m2(medium forest gap),and 100-150 m2(large forest gap))and different age(formation time of forest gaps:45 years,30 years,15 years,and 4 years)gaps as well as non forest gaps control(CK)of the low-function forest of Cunninghamia lanceolata in the hilly area of mid-southern Jiangxi,to elucidate the impact characteristics of gap area and age on species diversity and carbon storage of the shrubs and herbaceous layers.The results showed that:(1)Across 480 samples of shrub and herbaceous in gaps from 48 plots,we recorded 125 vascular plants,belonging to 66 families and 108 genera.(2)Gap interference improves community species diversity.The R and H indices of forest gaps were higher than those of CK and showed significant differences among different forest gaps(P<0.05),while the D index was lower than that of CK,and the Jsw index was higher than that of CK,but showed no significant differences among different forest gaps.Overall,the species diversity levels were the highest in the large forest gap and the 45 years forest gap.(3)Carbon storage in both shrub and herbaceous layers in the forest gap was significantly higher than that in the control,and the carbon storage of the shrub and herbaceous layers in the 45 year forest gap was the highest.(4)Gap area significantly impacted the species diversity of the shrub and herbaceous layers,whereas the age of the forest gap had a significant impact on the species diversity of the shrub and herbaceous layers,and the carbon storage of the herbaceous layer.The interaction between the area of the forest gap and the age of the forest gap only had a highly significant impact on the R index of the herbaceous layer(P<0.01).Therefore,gap area and regeneration development play important roles in promoting understory regeneration species and increasing carbon storage.Gaps of 100-150 m2 gap and 45 years of age were the most suitable gap areas and ages for improving the species diversity and carbon storage level of the shrub and herbaceous layers of the low-function forest of C.lanceolata.