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[Water sources of Populus euphratica with different tree ages in the oasis of desert hinterland.] / 沙漠腹地天然绿洲不同林龄胡杨水分利用来源.
Wan, Yan-Bo; Shi, Qing-Dong; Dai, Yue; Li, Tao; Peng, Lei; Li, Hao.
Afiliación
  • Wan YB; Ministry of Education Key Laboratory of Oasis Ecology, College of Resources and Environmental Science, Xinjiang University, Urumqi 830046, China.
  • Shi QD; Ministry of Education Key Laboratory of Oasis Ecology, College of Resources and Environmental Science, Xinjiang University, Urumqi 830046, China.
  • Dai Y; Ministry of Education Key Laboratory of Oasis Ecology, College of Resources and Environmental Science, Xinjiang University, Urumqi 830046, China.
  • Li T; Ministry of Education Key Laboratory of Oasis Ecology, College of Resources and Environmental Science, Xinjiang University, Urumqi 830046, China.
  • Peng L; Ministry of Education Key Laboratory of Oasis Ecology, College of Resources and Environmental Science, Xinjiang University, Urumqi 830046, China.
  • Li H; Ministry of Education Key Laboratory of Oasis Ecology, College of Resources and Environmental Science, Xinjiang University, Urumqi 830046, China.
Ying Yong Sheng Tai Xue Bao ; 33(2): 353-359, 2022 Feb.
Article en Zh | MEDLINE | ID: mdl-35229508
Understanding vegetation water utilization can provide scientific basis for vegetation protection and rational distribution of water resources in arid desert oasis area. In this study, sapling (DBH≤10 cm), mature (10 cm40 cm) Populus euphratica were chosen as sample trees in natural oasis of Dariaboui. We measured oxygen isotopes of xylem water and potential water sources (surface water, soil water in 0-3 m soil layer and groundwater) of P. euphratica with different tree ages. The IsoSource model was used to study water sources of P. euphratica. The results showed that soil water content increased with increasing soil depth, while the δ18O value of soil water decreased firstly and then stabilized. When groundwater depth was 2 m, the δ18O value of xylem water increased with increasing tree ages. When the depths of groundwater were 4.2 and 8 m, the δ18O values of xylem water decreased with increasing tree ages. Water sources of P. euphratica varied across tree age. When the depth of underground water was 2 m, the main water source for young trees was surface water, and the contribution proportion was 64.7%. For mature and overmature trees, it was deep soil water and ground-water, with a contribution of about 30%. When the depth of groundwater was 4.2 m, the main water sources of P. euphratica of different tree ages were deep soil water and groundwater, and the contribution proportion was about 30%. The lowest contribution of P. euphratica of different tree ages was shallow soil water, accounting for about 10%.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Agua Subterránea / Populus Idioma: Zh Revista: Ying Yong Sheng Tai Xue Bao Asunto de la revista: SAUDE AMBIENTAL Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: China
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Agua Subterránea / Populus Idioma: Zh Revista: Ying Yong Sheng Tai Xue Bao Asunto de la revista: SAUDE AMBIENTAL Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: China