Effects of earthworm (Amynthas aspergillum) activities and cast mulching on soil evaporation
Liu, Tong1; Cheng, Jiong1; Li, Xiang Dong1; Shao, Ming an2; Jiang, Chong3; Huang, Bin1; Zhu, Xu Chao4; Huang, Sai Hua1; Huang, You Liang5
Source PublicationCATENA
Corresponding AuthorCheng, Jiong(cheng1jiong2@126.com) ; Li, Xiang Dong(d1x2li6@126.com)
AbstractEarthworms are typical ecosystem engineers because they greatly affect the physical properties of soil in various ways. In this study, simulation experiments were performed to assess the effects of earthworms (Amynthas aspergillum) on the soil evaporation process in a subtropical region of China. Five population sizes CK (0), A1 (0), A2 (10), A3 (20), and A4 (30), four cast mulch thicknesses (0, 1, 2, and 4 cm), and four cast mulch area coverage percentages (0, 30%, 60%, and 90%) were tested with four replicates each for the different treatments. Water was applied again to the treatments until the soil water content reached 20% on day 14. The results showed that earthworms significantly increased the content of water-stable aggregates (WSA), where the WSA contents under different treatments were 35-40.6 g (P < 0.05). The soil water content decreased in the first 13 days after earthworm inoculation, before increasing gradually after adding water again. Compared with CK, the average water contents increased by 45.9-151.2 g in the earthworm treatments. When the number of added earthworms was 30, the water contents were 126.5 g in A3 and 151.2 g in A4 (P < 0.05). Different earthworm cast mulch thickness and area coverage percentages significantly reduced the cumulative evaporation (P < 0.05), where they reduced the cumulative evaporation by 31.2-63.5% and 14.5-29.8%, respectively, compared with CK. When the soil moisture was at a low level, minimal differences were observed in the evaporation rates among the treatments. Thus, the activities of earthworms can improve the soil water-holding ability and inhibit evaporation from lateritic red soil.
KeywordCast Earthworm Evaporation Mulch Amynthas aspergillum Soil water content
Indexed BySCI
Funding ProjectNational Natural Science Foundation of China[41701250] ; National Natural Science Foundation of China[42007012] ; Guangdong Special Topics on the Introduction of Innovative Talents[2017GDASCX-0831] ; GDAS' Project of Science and Technology Development[2019GDASYL-0401003] ; Qingyuan Science and Technology Project[2020KJJH012]
Funding OrganizationNational Natural Science Foundation of China ; Guangdong Special Topics on the Introduction of Innovative Talents ; GDAS' Project of Science and Technology Development ; Qingyuan Science and Technology Project
WOS Research AreaGeology ; Agriculture ; Water Resources
WOS SubjectGeosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS IDWOS:000620777400005
Citation statistics
Document Type期刊论文
Corresponding AuthorCheng, Jiong; Li, Xiang Dong
Affiliation1.Guangdong Acad Sci, Natl Reg Joint Engn Res Ctr Soil Pollut Control &, Inst Ecoenvironm & Soil Sci, Guangdong Key Lab Integrated Agroenvironm Pollut, Guangzhou 510650, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
3.Guangzhou Inst Geog, Guangdong Open Lab Geospatial Informat Technol &, Guangzhou 510070, Peoples R China
4.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China
5.Fogang Fertile Soil Agr Technol Co LTD, Qingyuan 511699, Peoples R China
Recommended Citation
GB/T 7714
Liu, Tong,Cheng, Jiong,Li, Xiang Dong,et al. Effects of earthworm (Amynthas aspergillum) activities and cast mulching on soil evaporation[J]. CATENA,2021,200:10.
APA Liu, Tong.,Cheng, Jiong.,Li, Xiang Dong.,Shao, Ming an.,Jiang, Chong.,...&Huang, You Liang.(2021).Effects of earthworm (Amynthas aspergillum) activities and cast mulching on soil evaporation.CATENA,200,10.
MLA Liu, Tong,et al."Effects of earthworm (Amynthas aspergillum) activities and cast mulching on soil evaporation".CATENA 200(2021):10.
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