| Distribution characters of soil agricultural moisture constant in the loess plateau of Gansu Province |
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| DOI：10.7606/j.issn.1000-7601.2008.03.41 |
| Key Words: Gansu loess plateau soil moisture constant distribution character |
| Author Name | Affiliation | | PU Jingyong | Lanzhou Institute of Arid Meteorology Key and Open Laboratory of Arid Climate Change and Reducing Disaster China Meteorological Administration Key Laboratory of Arid Climate Change and Reducing Disaster of Gansu Province,Lanzhou, Gansu 730020, China；Agrometeorological Experiment Station of Tianshui, Tianshui, Gansu 741020, China | | FENG Jianying | anzhou Institute of Arid Meteorology Key and Open Laboratory of Arid Climate Change and Reducing Disaster China Meteorological Administration Key Laboratory of Arid Climate Change and Reducing Disaster of Gansu Province,Lanzhou, Gansu 730020, China | | YAO Xiaohong | Agrometeorological Experiment Station of Tianshui, Tianshui, Gansu 741020, China | | LIU Weimin | Tianshui Meteorology Bureau, Tianshui, Gansu 741000 China | | YUAN Baishun | Tianshui Meteorology Bureau, Tianshui, Gansu 741000 China | | XIN Changye | Agrometeorological Experiment Station of Tianshui, Tianshui, Gansu 741020, China |
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| Abstract: |
| Based on the data of soil moisture constant which was measured at test field of 23agrometeorological observatories and3agrometeorological experiment stations the distribution characters were analyzed． The results showed that soil density turned smaller from north to south and upper to deeper and the variation of wilting moisture did not appear big difference in the loess plateau of Gansu Province．It also indicated that the field water-holding capacity showed difference obviously in which Longxi’s was bigger than Longdong’s and the critical amount of soil water under drought of the north was smaller than that of the south the maximum value appeared in central section in Longxi loess plateau． |
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