Hydrological niche separation between two coexisting shrubs in an extremely arid region
Study region: At the southern edge of Badain Jaran Desert, China. Study focus: The mixed shrubs of Calligonum mongolicum and Nitraria sphaerocarpa are the common species in extreme arid areas. There are few studies on the water use and coexistence mechanisms of the two species. So we examined the wa...
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Elsevier
2025-02-01
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| Series: | Journal of Hydrology: Regional Studies |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581824005196 |
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| author | Mingyan Fan Hai Zhou Lihui Tian Heng Ren Bing Liu Xibin Ji Xiangyan Feng Qiyue Yang Huli Gu |
| author_facet | Mingyan Fan Hai Zhou Lihui Tian Heng Ren Bing Liu Xibin Ji Xiangyan Feng Qiyue Yang Huli Gu |
| author_sort | Mingyan Fan |
| collection | DOAJ |
| description | Study region: At the southern edge of Badain Jaran Desert, China. Study focus: The mixed shrubs of Calligonum mongolicum and Nitraria sphaerocarpa are the common species in extreme arid areas. There are few studies on the water use and coexistence mechanisms of the two species. So we examined the water use strategies of these two species based on hydrogen and oxygen stable isotope technology, and the coexistence mechanism of the two desert plants was explored from the perspective of hydrological niche separation (HNS). New hydrological insights for the region: The N. sphaerocarpa had more root biomass in shallow soil than C. mongolicum, whereas the opposite was true in deep soil, indicating a root niche separation. Additionally, the C. mongolicum exhibited a significant dependence on deep soil water (about 26 %) and groundwater (over 30 %); while N. sphaerocarpa has a significant response to precipitation, its proportion of shallow soil water is more than 40 % after heavy precipitation events, in seasons with less precipitation, it relied on groundwater for survival. Both species had a dynamic HNS, the hydrological niche overlap index exhibited a decreasing and then increasing trend; but HNS was low during the dry season, indicating that HNS was affected by precipitation. We conclude that the main reason why the two species can coexist in arid regions is their HNS, which avoid competition for limited water resources. |
| format | Article |
| id | doaj-art-6129f5f4c3b2462cbd649e95737c838c |
| institution | Kabale University |
| issn | 2214-5818 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj-art-6129f5f4c3b2462cbd649e95737c838c2025-01-22T05:42:20ZengElsevierJournal of Hydrology: Regional Studies2214-58182025-02-0157102170Hydrological niche separation between two coexisting shrubs in an extremely arid regionMingyan Fan0Hai Zhou1Lihui Tian2Heng Ren3Bing Liu4Xibin Ji5Xiangyan Feng6Qiyue Yang7Huli Gu8Linze Inland River Basin Research Station, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Institutional Center for Shared Technologies and Facilities, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, ChinaLinze Inland River Basin Research Station, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Institutional Center for Shared Technologies and Facilities, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; Corresponding author.State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, ChinaLinze Inland River Basin Research Station, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Institutional Center for Shared Technologies and Facilities, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaLinze Inland River Basin Research Station, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Institutional Center for Shared Technologies and Facilities, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaLinze Inland River Basin Research Station, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Institutional Center for Shared Technologies and Facilities, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaBreeding Base for State Key Lab. of Land Degradation and Ecological Restoration in northwestern China, Key Laboratory of Restoration and Reconstruction of Degraded Ecosystems in northwestern China of Ministry of Education, School of Ecology and Environment, Ningxia University, Yinchuan 750021, ChinaLinze Inland River Basin Research Station, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Institutional Center for Shared Technologies and Facilities, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaLinze Inland River Basin Research Station, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Institutional Center for Shared Technologies and Facilities, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; College of Forestry, Gansu Agricultural University, Lanzhou 730070, ChinaStudy region: At the southern edge of Badain Jaran Desert, China. Study focus: The mixed shrubs of Calligonum mongolicum and Nitraria sphaerocarpa are the common species in extreme arid areas. There are few studies on the water use and coexistence mechanisms of the two species. So we examined the water use strategies of these two species based on hydrogen and oxygen stable isotope technology, and the coexistence mechanism of the two desert plants was explored from the perspective of hydrological niche separation (HNS). New hydrological insights for the region: The N. sphaerocarpa had more root biomass in shallow soil than C. mongolicum, whereas the opposite was true in deep soil, indicating a root niche separation. Additionally, the C. mongolicum exhibited a significant dependence on deep soil water (about 26 %) and groundwater (over 30 %); while N. sphaerocarpa has a significant response to precipitation, its proportion of shallow soil water is more than 40 % after heavy precipitation events, in seasons with less precipitation, it relied on groundwater for survival. Both species had a dynamic HNS, the hydrological niche overlap index exhibited a decreasing and then increasing trend; but HNS was low during the dry season, indicating that HNS was affected by precipitation. We conclude that the main reason why the two species can coexist in arid regions is their HNS, which avoid competition for limited water resources.http://www.sciencedirect.com/science/article/pii/S2214581824005196Coexisting speciesHydrological niche separationNiche overlapStable isotopesWater-use strategies |
| spellingShingle | Mingyan Fan Hai Zhou Lihui Tian Heng Ren Bing Liu Xibin Ji Xiangyan Feng Qiyue Yang Huli Gu Hydrological niche separation between two coexisting shrubs in an extremely arid region Journal of Hydrology: Regional Studies Coexisting species Hydrological niche separation Niche overlap Stable isotopes Water-use strategies |
| title | Hydrological niche separation between two coexisting shrubs in an extremely arid region |
| title_full | Hydrological niche separation between two coexisting shrubs in an extremely arid region |
| title_fullStr | Hydrological niche separation between two coexisting shrubs in an extremely arid region |
| title_full_unstemmed | Hydrological niche separation between two coexisting shrubs in an extremely arid region |
| title_short | Hydrological niche separation between two coexisting shrubs in an extremely arid region |
| title_sort | hydrological niche separation between two coexisting shrubs in an extremely arid region |
| topic | Coexisting species Hydrological niche separation Niche overlap Stable isotopes Water-use strategies |
| url | http://www.sciencedirect.com/science/article/pii/S2214581824005196 |
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