Biocrusts do not harm shrub root water uptake in the Mu Us sandland, China
Study regions: Three study sites (Yanchi, Wushen, and Yijinhuoluo), located in the Mu Us sandland, China. Study focus: Effects of biocrusts on the actual evapotranspiration (ETa) and transpiration (Ta) of Artemisia ordosica in the Mu Us sandland were determined and its effects on water stress along...
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Elsevier
2025-06-01
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| Series: | Journal of Hydrology: Regional Studies |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581825001867 |
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| author | Hongjie Guan Yang Yu Mengqi Yin Sizhuo Guo Gernot Bodner |
| author_facet | Hongjie Guan Yang Yu Mengqi Yin Sizhuo Guo Gernot Bodner |
| author_sort | Hongjie Guan |
| collection | DOAJ |
| description | Study regions: Three study sites (Yanchi, Wushen, and Yijinhuoluo), located in the Mu Us sandland, China. Study focus: Effects of biocrusts on the actual evapotranspiration (ETa) and transpiration (Ta) of Artemisia ordosica in the Mu Us sandland were determined and its effects on water stress along a precipitation gradient were simulated based on in-situ field monitoring and two-dimensional model. New hydrological insights for the region: Our study revealed that: (i) A. ordosica with biocrusts had a significantly higher ETa and Ta as compared to the A. ordosica with bare soil; however, biocrusts decreased the evaporation (Ea) by 7.1 %, 11.4 %, and 13.1 % for the cyanobacteria, lichens, and mosses, respectively, although the effects of biocrusts on the Ea were nonsignificant. (ii) compared to uncrusted soil, biocrusts decreased soil evaporation by 6.1 % but increased plant water uptake (PWU) by 16.1 %, (iii) soil moisture was increased by 5.4 %, 5.1 %, and 4.8 %, whereas the water stress fraction of the season was reduced by 22.7 %, 29.8 %, and 28.1 % for the Yanchi, Wushen, and Yijinhuoluo sites, respectively, as a results of biocrusts, and (iv) with an increasing seasonal rainfall amount, the PWU ratio decreased, with the mean value of 1.20, 1.17, and 1.15 for the Yanchi, Wushen, and Yijinhuoluo sites, respectively. Our results showed that biocrusts do not adversely affect root water uptake in drylands; hence, it is necessary to reconsider and re-evaluate the current vegetation restoration strategy in the perspective of biocrusts and plant water availability, in which shrubland were selected on a large scale in the arid regions. |
| format | Article |
| id | doaj-art-4b76c36826fa4b0c91b73006a0e41d4e |
| institution | OA Journals |
| issn | 2214-5818 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
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| series | Journal of Hydrology: Regional Studies |
| spelling | doaj-art-4b76c36826fa4b0c91b73006a0e41d4e2025-08-20T01:55:31ZengElsevierJournal of Hydrology: Regional Studies2214-58182025-06-015910236110.1016/j.ejrh.2025.102361Biocrusts do not harm shrub root water uptake in the Mu Us sandland, ChinaHongjie Guan0Yang Yu1Mengqi Yin2Sizhuo Guo3Gernot Bodner4School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China; Yanchi Research Station, School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China; Jixian National Forest Ecosystem Observation and Research Station, CNERN, School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, ChinaSchool of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China; Jixian National Forest Ecosystem Observation and Research Station, CNERN, School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China; Corresponding author at: School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China.School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, ChinaSchool of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, ChinaDepartment of Crop Sciences, Institute of Agronomy, University of Natural Resources and Life Sciences Vienna, Konrad-Lorenz-Straße 24, Tulln 3430, AustriaStudy regions: Three study sites (Yanchi, Wushen, and Yijinhuoluo), located in the Mu Us sandland, China. Study focus: Effects of biocrusts on the actual evapotranspiration (ETa) and transpiration (Ta) of Artemisia ordosica in the Mu Us sandland were determined and its effects on water stress along a precipitation gradient were simulated based on in-situ field monitoring and two-dimensional model. New hydrological insights for the region: Our study revealed that: (i) A. ordosica with biocrusts had a significantly higher ETa and Ta as compared to the A. ordosica with bare soil; however, biocrusts decreased the evaporation (Ea) by 7.1 %, 11.4 %, and 13.1 % for the cyanobacteria, lichens, and mosses, respectively, although the effects of biocrusts on the Ea were nonsignificant. (ii) compared to uncrusted soil, biocrusts decreased soil evaporation by 6.1 % but increased plant water uptake (PWU) by 16.1 %, (iii) soil moisture was increased by 5.4 %, 5.1 %, and 4.8 %, whereas the water stress fraction of the season was reduced by 22.7 %, 29.8 %, and 28.1 % for the Yanchi, Wushen, and Yijinhuoluo sites, respectively, as a results of biocrusts, and (iv) with an increasing seasonal rainfall amount, the PWU ratio decreased, with the mean value of 1.20, 1.17, and 1.15 for the Yanchi, Wushen, and Yijinhuoluo sites, respectively. Our results showed that biocrusts do not adversely affect root water uptake in drylands; hence, it is necessary to reconsider and re-evaluate the current vegetation restoration strategy in the perspective of biocrusts and plant water availability, in which shrubland were selected on a large scale in the arid regions.http://www.sciencedirect.com/science/article/pii/S2214581825001867Biological soil crustCyanobacteriaLichenMossPlant water uptakePlant water stress |
| spellingShingle | Hongjie Guan Yang Yu Mengqi Yin Sizhuo Guo Gernot Bodner Biocrusts do not harm shrub root water uptake in the Mu Us sandland, China Journal of Hydrology: Regional Studies Biological soil crust Cyanobacteria Lichen Moss Plant water uptake Plant water stress |
| title | Biocrusts do not harm shrub root water uptake in the Mu Us sandland, China |
| title_full | Biocrusts do not harm shrub root water uptake in the Mu Us sandland, China |
| title_fullStr | Biocrusts do not harm shrub root water uptake in the Mu Us sandland, China |
| title_full_unstemmed | Biocrusts do not harm shrub root water uptake in the Mu Us sandland, China |
| title_short | Biocrusts do not harm shrub root water uptake in the Mu Us sandland, China |
| title_sort | biocrusts do not harm shrub root water uptake in the mu us sandland china |
| topic | Biological soil crust Cyanobacteria Lichen Moss Plant water uptake Plant water stress |
| url | http://www.sciencedirect.com/science/article/pii/S2214581825001867 |
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