Spatial-Temporal Patterns and Controls of Evapotranspiration across the Tibetan Plateau (2000–2012)
Evapotranspiration (ET) is a key factor to further our understanding of climate change processes, especially on the Tibetan Plateau, which is sensitive to global change. Herein, the spatial patterns of ET are examined, and the effects of environmental factors on ET at different scales are explored f...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2017/7082606 |
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| _version_ | 1832564168430977024 |
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| author | Hao Zhang Jian Sun Junnan Xiong |
| author_facet | Hao Zhang Jian Sun Junnan Xiong |
| author_sort | Hao Zhang |
| collection | DOAJ |
| description | Evapotranspiration (ET) is a key factor to further our understanding of climate change processes, especially on the Tibetan Plateau, which is sensitive to global change. Herein, the spatial patterns of ET are examined, and the effects of environmental factors on ET at different scales are explored from the years 2000 to 2012. The results indicated that a steady trend in ET was detected over the past decade. Meanwhile, the spatial distribution shows an increase of ET from the northwest to the southeast, and the rate of change in ET is lower in the middle part of the Tibetan Plateau. Besides, the positive effect of radiation on ET existed mainly in the southwest. Based on the environment gradient transects, the ET had positive correlations with temperature (R>0.85, p<0.0001), precipitation (R > 0.89, p < 0.0001), and NDVI (R > 0.75, p < 0.0001), but a negative correlation between ET and radiation (R = 0.76, p < 0.0001) was observed. We also found that the relationships between environmental factors and ET differed in the different grassland ecosystems, which indicated that vegetation type is one factor that can affect ET. Generally, the results indicate that ET can serve as a valuable ecological indicator. |
| format | Article |
| id | doaj-art-0a7ff4554cf14717af790216af49d920 |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-0a7ff4554cf14717af790216af49d9202025-02-03T01:11:32ZengWileyAdvances in Meteorology1687-93091687-93172017-01-01201710.1155/2017/70826067082606Spatial-Temporal Patterns and Controls of Evapotranspiration across the Tibetan Plateau (2000–2012)Hao Zhang0Jian Sun1Junnan Xiong2School of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu 610500, ChinaSynthesis Research Centre of Chinese Ecosystem Research Network, Key Laboratory of Ecosystem Network Observation and Modelling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, ChinaSchool of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu 610500, ChinaEvapotranspiration (ET) is a key factor to further our understanding of climate change processes, especially on the Tibetan Plateau, which is sensitive to global change. Herein, the spatial patterns of ET are examined, and the effects of environmental factors on ET at different scales are explored from the years 2000 to 2012. The results indicated that a steady trend in ET was detected over the past decade. Meanwhile, the spatial distribution shows an increase of ET from the northwest to the southeast, and the rate of change in ET is lower in the middle part of the Tibetan Plateau. Besides, the positive effect of radiation on ET existed mainly in the southwest. Based on the environment gradient transects, the ET had positive correlations with temperature (R>0.85, p<0.0001), precipitation (R > 0.89, p < 0.0001), and NDVI (R > 0.75, p < 0.0001), but a negative correlation between ET and radiation (R = 0.76, p < 0.0001) was observed. We also found that the relationships between environmental factors and ET differed in the different grassland ecosystems, which indicated that vegetation type is one factor that can affect ET. Generally, the results indicate that ET can serve as a valuable ecological indicator.http://dx.doi.org/10.1155/2017/7082606 |
| spellingShingle | Hao Zhang Jian Sun Junnan Xiong Spatial-Temporal Patterns and Controls of Evapotranspiration across the Tibetan Plateau (2000–2012) Advances in Meteorology |
| title | Spatial-Temporal Patterns and Controls of Evapotranspiration across the Tibetan Plateau (2000–2012) |
| title_full | Spatial-Temporal Patterns and Controls of Evapotranspiration across the Tibetan Plateau (2000–2012) |
| title_fullStr | Spatial-Temporal Patterns and Controls of Evapotranspiration across the Tibetan Plateau (2000–2012) |
| title_full_unstemmed | Spatial-Temporal Patterns and Controls of Evapotranspiration across the Tibetan Plateau (2000–2012) |
| title_short | Spatial-Temporal Patterns and Controls of Evapotranspiration across the Tibetan Plateau (2000–2012) |
| title_sort | spatial temporal patterns and controls of evapotranspiration across the tibetan plateau 2000 2012 |
| url | http://dx.doi.org/10.1155/2017/7082606 |
| work_keys_str_mv | AT haozhang spatialtemporalpatternsandcontrolsofevapotranspirationacrossthetibetanplateau20002012 AT jiansun spatialtemporalpatternsandcontrolsofevapotranspirationacrossthetibetanplateau20002012 AT junnanxiong spatialtemporalpatternsandcontrolsofevapotranspirationacrossthetibetanplateau20002012 |