|本期目录/Table of Contents|

[1]鱼舜尧 向琳 喻静 陈聪琳 苏天成 王姚瑶 张瀚文 李婧 郝建锋,**.林分密度对四川云顶山柏木人工林林下物种多样性和土壤抗冲性的影响[J].应用与环境生物学报,2022,28(04):1-10.[doi:10.19675/j.cnki.1006-687x.2021.06023]
　YU shunyao,XIANG lin,YU jing,et al.Effects of stand density on understory species diversity and soil erosion resistanc e of Cupressus funebris plantation in Yunding Mountain , Sichuan[J].Chinese Journal of Applied & Environmental Biology,2022,28(04):1-10.[doi:10.19675/j.cnki.1006-687x.2021.06023]
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林分密度对四川云顶山柏木人工林林下物种多样性和土壤抗冲性的影响()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
28卷
期数:
2022年04期
页码:
1-10
栏目:
研究论文
出版日期:
2022-08-25

文章信息/Info

Title:
Effects of stand density on understory species diversity and soil erosion resistanc e of Cupressus funebris plantation in Yunding Mountain , Sichuan
作者:
鱼舜尧1 向琳1 喻静1 陈聪琳1 苏天成1 王姚瑶1 张瀚文1 李婧1 郝建锋1;  2**
1四川农业大学林学院 成都 611130
2四川农业大学水土保持与荒漠化防治重点实验室 成都 611130
Author(s):
YU shunyao1;  XIANG lin1;  YU jing1;  CHEN conglin1;  SU tiancheng1;  WANG yaoyao1;  ZHANG hanwen 1;  LI jing1 & HAO jianfeng 1; 2**
1College of Forestry, Sichuan Agricultural University, Chengdu 611130, China
2 The Key Laboratory of Soil and Water Conservation and Desertification Control, Sichuan Agricultural University, Chengdu 611130, China
关键词:
林分密度; 柏木人工林; 物种多样性; 土壤抗冲性
Keywords:
stand density;  Cupressus funebris plantation;  species diversity;  soil erosion resistance
DOI:
10.19675/j.cnki.1006-687x.2021.06023
摘要:
为构建荒山生态保护屏障，川中丘陵区于20世纪80年代末大量营造柏木（Cupressus funebris）人工林，近年来柏木人工林面临生物多样性降低和土壤侵蚀等问题。为研究不同林分密度对云顶山柏木人工林林下物种多样性和土壤抗冲性的影响，采用典型样地法，调查该地5种不同林分密度（1100、950、800、650、500株/hm2），分析物种多样性指数和土壤抗冲性及根系指标的相关性。结果：研究区共记录植物176种，隶属69科128属，草本层物种数大于灌木层。灌木层的物种多样性指数随林分密度降低，呈先增后减的趋势，物种丰富度指数D、Shannon-Wiener多样性指数H在密度650株/hm2出现峰值；草本层物种丰富度指数D、Shannon-Wiener多样性指数H、Simpson优势度指数H’随林分密度降低均呈先增后减再增再减的双峰型变化趋势，在密度650株/hm2和950株/hm2出现峰值。土壤抗冲性随林分密度减小，呈先增后减单峰型变化趋势，在密度650株/hm2达峰值。物种丰富度指数D与土壤抗冲性正相关关系明显。本研究表明650株/hm2相对更利于该地柏木人工林物种多样性稳定和土壤的抗冲性能。（图4表3参28）
Abstract:
To protect the ecosystem of barren mountains, massive Cupressus funebris plantations were planted in the hilly areas of central Sichuan Basin In the late 1980s. In recent years, Cupressus funebris plantations have faced with problems such as biodiversity decline and soil erosion. In order to study the effects of different forest density on understory species diversity and soil erosion resistance of Cupressus funebris plantation in Yunding Mountain, a typical sampling method was used to investigate the five different forest densit ies (1100, 950, 800, 650, 500 trees/hm2), to analyze the correlation between the species diversity index, soil erosion resistance and root index. Results: A total of 176 species were recorded in this area, belonging to 128 genera and 69 families. The number of species in the herb layer was more than that in the shrub layer. The species diversity index of shrub layer increased first and then decreased with the decrease of stand density, and the species richness index D and Shannon-Wiener diversity index H showed the peak values at the density of 650 trees /hm2; The species richness index D, Shannon-Wiener diversity index H, and Simpson dominance index H’ in the herb layer showed a bimod al trend of first increasing, then decreasing, increasing again and finally decreasing with the decrease of stand density, and the peak values were found at the densities 650 and 950 trees/hm2 When soil erosion resistance decreased with the stand density, itself showed a trend of increasing first and then decreasing single-peak type, reaching the peak at the density 650 trees/hm2. The positive correlation between species richness index and soil erosion resistance is obvious. The conclusion is that 650 trees/hm2 is relatively more conducive to the stability of species diversity and soil erosion resistance of cypress plantations.

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　YANG Yulin,LI Xianwei,ZHOU Yigui,et al.Effects of gap thinning on growth and diversity of a cypress plantation in the hilly region of central Sichuan[J].Chinese Journal of Applied & Environmental Biology,2014,20(04):971.[doi:10.3724/SP.J.1145.2014.05004]
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更新日期/Last Update: 2021-09-08