| Revision of soil moisture monitoring index and its application in Inner Mongolia |
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| DOI：10.7606/j.issn.1000-7601.2020.01.35 |
| Key Words: soil water content soil moisture single station single standard relative soil wilting humidity field capacity Inner Mongolia |
| Author Name | Affiliation | | DAI Haiyan | Inner Mongolia Ecology and Agricultural Meteorology Centre, Hohhot, Inner Mongolia 010051, China | | WU Jianhua | Chifeng Meteorological Bureau, Chifeng, Inner Monglia 024000, China | | JIA Chengzhen | Inner Mongolia Ecology and Agricultural Meteorology Centre, Hohhot, Inner Mongolia 010051, China | | DU Wala | Inner Mongolia Ecology and Agricultural Meteorology Centre, Hohhot, Inner Mongolia 010051, China | | YANG Liping | Inner Mongolia Ecology and Agricultural Meteorology Centre, Hohhot, Inner Mongolia 010051, China | | CHEN Suhua | Inner Mongolia Ecology and Agricultural Meteorology Centre, Hohhot, Inner Mongolia 010051, China |
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| Abstract: |
| The concept of effective soil water limit was introduced into the soil moisture level assessment in this paper, the author put forward a new soil moisture content evaluation standard, each monitoring station had a corresponding standard. The results showed that the area with high wilting humidity and field moisture holding mainly distributed in the eastern region, Hetao region, and Yinshan mountains in automatic soil moisture observation station of Inner Mongolia. The relatively low areas was mainly as grassland and desert areas in Xilin Gol League and the western region of Inner Mongolia. The relative wilting humidity in the eastern region was higher than that in the central and western regions, especially, in the eastern region of Inner Mongolia. Relative wilting humidity with a wide range of fluctuations ranged from 6.57% to 55.15%, according to the classification of equal spacing the upper limit range of the second and third types of moisture content was 68.86%~85.05% and 37.71%~70.07%. There were great differences in moisture content levels among different regions. The second and third types of moisture content ranged based on the geographical location as east area > central area > west area > Xilin Gol League grassland area. From the perspective of land use zoning, agricultural and forest areas were significantly higher than grassland areas. Among them, the Ulan Qab-Tumochuan agricultural area, Yinshan hilly agricultural area, and Hetao irrigation district in central and western Inner Mongolia obviously were higher than the surrounding grassland area. |
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