PMID- 35031368
OWN - NLM
STAT- MEDLINE
DCOM- 20220304
LR  - 20220304
IS  - 1879-1026 (Electronic)
IS  - 0048-9697 (Linking)
VI  - 817
DP  - 2022 Apr 15
TI  - Analysis of the influence paths of land use and landscape pattern on organic 
      matter decomposition in river ecosystems: Focusing on microbial groups.
PG  - 152999
LID - S0048-9697(22)00088-2 [pii]
LID - 10.1016/j.scitotenv.2022.152999 [doi]
AB  - Organic matter decomposition (OMD) is one of the important river ecosystem 
      functions. Changes in land use and landscape pattern (LULP) have a serious 
      influence on the OMD in neighboring river ecosystems. However, there is limited 
      information on the influence paths of LULP on organic matter decomposition in 
      river ecosystems. In this study, cotton strip (CS) as a substitute for 
      investigating OMD, was introduced to the delineated catchments in Luanhe River 
      Basin in China, meanwhile combining with remote sensing interpretation, water 
      quality analysis, microbial sequencing, and redundancy analysis (RDA) to identify 
      the dominant LULP metrics, water quality parameters, and microbial groups 
      controlling the OMD. Then the structural equation models (SEMs) were used to 
      connect these dominant controlling factors to track the influence paths of LULP 
      on OMD in river ecosystems. RDA results indicated that construction land (CON), 
      farmland (FAR) and landscape shape index (LSI) in LULP, total nitrogen (TN), 
      chemical oxygen demand (COD) and pH in water quality, bacterial phyla 
      Planctomycetes and Firmicutes, as well as fungal phyla Chytridiomycota and 
      Basidiomycota were the dominant factors controlling the OMD (quantified by 
      tensile strength loss (TSL) and respiration (RES)). These four microbial phyla 
      contributed significantly to OMD. SEMs further proposed three paths to explain 
      the mechanism of LULP influencing on OMD, which were CON - TN - Firmicutes - TSL, 
      CON - TN - Chytridiomycota - RES, and FAR - COD - Chytridiomycota - TSL. CON 
      promoted OMD mainly through enhancing TN content in river water to increase 
      Firmicutes and Chytridiomycota. FAR increased Chytridiomycota by decreasing COD 
      in river water, promoting OMD. These results will deepen our understanding of the 
      influence of LULP on river ecosystem functions and provide valuable information 
      for policymakers and managers to carry out watershed land planning and river 
      management in the future.
CI  - Copyright (c) 2022. Published by Elsevier B.V.
FAU - Liu, Yibo
AU  - Liu Y
AD  - Key Laboratory of Groundwater Resources and Environment Ministry of Education, 
      College of New Energy and Environment, Jilin University, Changchun 130012, PR 
      China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin 
      University, Changchun 130012, PR China; Chinese Research Academy of Environmental 
      Science, Beijing 100012, PR China.
FAU - Shen, Yanping
AU  - Shen Y
AD  - Key Laboratory of Groundwater Resources and Environment Ministry of Education, 
      College of New Energy and Environment, Jilin University, Changchun 130012, PR 
      China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin 
      University, Changchun 130012, PR China.
FAU - Cheng, Cheng
AU  - Cheng C
AD  - Key Laboratory of Groundwater Resources and Environment Ministry of Education, 
      College of New Energy and Environment, Jilin University, Changchun 130012, PR 
      China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin 
      University, Changchun 130012, PR China.
FAU - Yuan, Weilin
AU  - Yuan W
AD  - Key Laboratory of Groundwater Resources and Environment Ministry of Education, 
      College of New Energy and Environment, Jilin University, Changchun 130012, PR 
      China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin 
      University, Changchun 130012, PR China.
FAU - Gao, Hongjie
AU  - Gao H
AD  - Chinese Research Academy of Environmental Science, Beijing 100012, PR China. 
      Electronic address: gaohj@craes.org.cn.
FAU - Guo, Ping
AU  - Guo P
AD  - Key Laboratory of Groundwater Resources and Environment Ministry of Education, 
      College of New Energy and Environment, Jilin University, Changchun 130012, PR 
      China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin 
      University, Changchun 130012, PR China. Electronic address: guoping@jlu.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20220111
PL  - Netherlands
TA  - Sci Total Environ
JT  - The Science of the total environment
JID - 0330500
RN  - N762921K75 (Nitrogen)
SB  - IM
MH  - China
MH  - *Ecosystem
MH  - Environmental Monitoring/methods
MH  - Nitrogen/analysis
MH  - *Rivers
MH  - Water Quality
OTO - NOTNLM
OT  - Cotton strip
OT  - Land use and landscape pattern
OT  - Microbe
OT  - Organic matter decomposition
OT  - River ecosystems
OT  - Water quality
COIS- Declaration of competing interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2022/01/16 06:00
MHDA- 2022/03/05 06:00
CRDT- 2022/01/15 05:38
PHST- 2021/07/24 00:00 [received]
PHST- 2021/11/02 00:00 [revised]
PHST- 2022/01/05 00:00 [accepted]
PHST- 2022/01/16 06:00 [pubmed]
PHST- 2022/03/05 06:00 [medline]
PHST- 2022/01/15 05:38 [entrez]
AID - S0048-9697(22)00088-2 [pii]
AID - 10.1016/j.scitotenv.2022.152999 [doi]
PST - ppublish
SO  - Sci Total Environ. 2022 Apr 15;817:152999. doi: 10.1016/j.scitotenv.2022.152999. 
      Epub 2022 Jan 11.