PMID- 35991461
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20220823
IS  - 1664-462X (Print)
IS  - 1664-462X (Electronic)
IS  - 1664-462X (Linking)
VI  - 13
DP  - 2022
TI  - Thinning can increase shrub diversity and decrease herb diversity by regulating 
      light and soil environments.
PG  - 948648
LID - 10.3389/fpls.2022.948648 [doi]
LID - 948648
AB  - Tree thinning affects the light environment, which in turn affects the growth and 
      survival of understory vegetation, thus improving species diversity and nutrient 
      cycling, as well as the ecological habitat factors. However, the response of 
      understory vegetation to the thinning intensity and short-time effects in the 
      temperate broadleaf-conifer mixed forest is not completely clear. In this study, 
      four permanent plots with a total area of 4 hm(2) were established in a mixed 
      broadleaf-conifer forest in northeast China, with thinning intensities of 20% 
      (light thinning, LT), 35% (medium thinning, MT), 55% (heavy thinning, HT) and the 
      unthinned plot (CK), respectively, in accordance with the basal area. The 
      responses of species diversity to changes in understory vegetation were conducted 
      by a structural equation model (SEM). The results showed that compared with CK, 
      thinning significantly increased the photosynthetically active radiation (PAR) 
      and the light quality (R/FR) (p < 0.05), while decreased the contents of soil 
      total nitrogen (TN), total phosphorous (TP), organic matter (OM), nitrate 
      nitrogen (NN), ammonia nitrogen (AN) and pH. The degree of fragmentation of light 
      factors among the treatment plots gradually decreased as thinning intensity 
      increased. Among all the thinning treatments, PAR and R/FR were found to be the 
      optimal light condition when the forest thinning intensity was 55%. The light 
      condition was found to have a significant negative correlation with soil TN, TP, 
      OM, and AN. While the soil nutrients were positively correlated with herbaceous 
      layer diversity but negatively correlated with shrub layer diversity. The soil 
      nutrients were lost after thinning in a short time and herb diversity decreased, 
      but shrub diversity increased significantly compared with unthinned plots. For 
      the understory vegetation, the species diversity of shrub and herb layer were 
      showed to be more sensitive to soil nutrients than light environment.
CI  - Copyright (c) 2022 Yu, Zhang, Xu, Hao, Choe and He.
FAU - Yu, Jiatong
AU  - Yu J
AD  - The Key Laboratory for Silviculture and Conservation of Ministry of Education, 
      Key Laboratory for Silviculture and Forest Ecosystem of State Forestry and 
      Grassland Administration, Research Center for Urban Forestry, Beijing Forestry 
      University, Beijing, China.
FAU - Zhang, Xinna
AU  - Zhang X
AD  - The Key Laboratory for Silviculture and Conservation of Ministry of Education, 
      Key Laboratory for Silviculture and Forest Ecosystem of State Forestry and 
      Grassland Administration, Research Center for Urban Forestry, Beijing Forestry 
      University, Beijing, China.
FAU - Xu, Chengyang
AU  - Xu C
AD  - The Key Laboratory for Silviculture and Conservation of Ministry of Education, 
      Key Laboratory for Silviculture and Forest Ecosystem of State Forestry and 
      Grassland Administration, Research Center for Urban Forestry, Beijing Forestry 
      University, Beijing, China.
FAU - Hao, Minhui
AU  - Hao M
AD  - The Key Laboratory for Silviculture and Conservation of Ministry of Education, 
      Beijing Forestry University, Beijing, China.
FAU - Choe, CholHo
AU  - Choe C
AD  - Faculty of Life Science, Kim Il Sung University, Pyongyang, North Korea.
FAU - He, Huaijiang
AU  - He H
AD  - Jilin Provincial Academy of Forestry Sciences Faculty of Life Science, Changchun, 
      China.
LA  - eng
PT  - Journal Article
DEP - 20220805
PL  - Switzerland
TA  - Front Plant Sci
JT  - Frontiers in plant science
JID - 101568200
PMC - PMC9389291
OTO - NOTNLM
OT  - light environment
OT  - mixed broadleaf-conifer forest
OT  - soil nutrient content
OT  - thinning intensity
OT  - understory species diversity
COIS- The authors declare that the research was conducted in the absence of any 
      commercial or financial relationships that could be construed as a potential 
      conflict of interest.
EDAT- 2022/08/23 06:00
MHDA- 2022/08/23 06:01
PMCR- 2022/01/01
CRDT- 2022/08/22 04:11
PHST- 2022/05/20 00:00 [received]
PHST- 2022/07/04 00:00 [accepted]
PHST- 2022/08/22 04:11 [entrez]
PHST- 2022/08/23 06:00 [pubmed]
PHST- 2022/08/23 06:01 [medline]
PHST- 2022/01/01 00:00 [pmc-release]
AID - 10.3389/fpls.2022.948648 [doi]
PST - epublish
SO  - Front Plant Sci. 2022 Aug 5;13:948648. doi: 10.3389/fpls.2022.948648. eCollection 
      2022.