| 代海燕,吴建华,贾成朕,都瓦拉,杨丽萍,陈素华.土壤水分监测指标修订在内蒙古地区的应用[J].干旱地区农业研究,2020,38(1):274~279 |
| 土壤水分监测指标修订在内蒙古地区的应用 |
| 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 |
| 中文关键词: 土壤含水量 土壤墒情 单站单标准 相对凋萎湿度 田间持水量 内蒙古 |
| 英文关键词:soil water content soil moisture single station single standard relative soil wilting humidity field capacity Inner Mongolia |
| 基金项目:国家自然科学基金项目(41461102) ；林业公益性行业专项（201304206）；内蒙古自治区自然科学基金项目（2016MS0376） |
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| 中文摘要: |
| 为了准确评估土壤水分盈亏状况，在墒情评估中引入土壤有效水下限概念，提出单站单标准的墒情评估体系。结果表明：内蒙古自动土壤水分观测站凋萎湿度和田间持水量整体偏高，区域主要集中在东部区、河套地区和阴山山脉，相对偏低区域主要在锡林郭勒盟和西部区，偏低区土地类型以草原和荒漠区为主。整体来看，相对凋萎湿度东部高于中西部，东部偏南最高；相对凋萎湿度（6.57%～55.15%）波动较大，在田间持水量至相对凋萎湿度之间根据等间距划分得到二类、三类墒情上限范围为68.86%～85.05%和37.71%～70.07%，地区间墒情标准等级差异较大，二、三类墒情从地理位置来看，东部区>中部区>西部区>锡林郭勒盟草原区，从土地利用分区来看，农林区域要明显大于草原区，其中内蒙古中西部的乌兰察布—土默川农业区、阴山丘陵农业区、河套灌区要明显高于周边草原区。 |
| 英文摘要: |
| 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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