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Arid Land Geography >

2022 , Vol. 45 >Issue 6: 1881 - 1889

DOI: https://doi.org/10.12118/j.issn.1000-6060.2022.094

Biology and Environment

Characteristics of precipitation and response of soil moisture to precipitation pulse in meadow steppe: A case of Ergun City in Hulunbuir steppe

  • Cunhou ZHANG ,
  • Xiaofeng DUAN ,
  • Liping YANG ,
  • Kun YUE ,
  • Li ZHANG
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  • 1. Centre of Ecology and Agricultural Meteorology, Inner Mongolia Weather Bureau, Hohhot 010051, Inner Mongolia, China
    2. Meteorological Information Centre, Inner Mongolia Autonomous Region Weather Bureau, Hohhot 010051, Inner Mongolia, China

Received date: 2022-03-10

  Revised date: 2022-06-21

  Online published: 2023-02-01

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Abstract

The regulation of structure and function in an ecosystem is largely affected by soil moisture, and the grassland ecosystem is more sensitive to soil moisture than other ecosystems. The change of soil moisture is determined by precipitation, so how does precipitation affect grassland soil moisture? What is the response law to the precipitation of grassland soil moisture? These are the key problems in the benign development of grassland ecosystems. However, there have been few reports on the response of soil moisture to precipitation in the meadow steppe in north China. To reveal the characteristics of precipitation and the response of soil moisture to precipitation pulse, the Hulunbuir meadow steppe was taken as the research object, dynamic change, transformation process of precipitation, and soil moisture were analyzed. The influence characteristics of different scale precipitation processes on soil water were explored and the critical values of rainfall, which could cause each layer of soil moisture (0-50 cm) of the meadow steppe were determined based on the data of precipitation and soil moisture from Ergun Animal Husbandry Meteorology Experiment Station. The relationship models between precipitation and soil water increment were established to invert soil water content, which could significantly reduce the spatial uncertainty of refined drought assessment and provide a scientific basis for local government to fight drought and reduce the disaster. The response regularity of soil moisture to precipitation pulse at different depths was revealed in the meadow steppe. The results showed that (1) the precipitation showed a trend of “decreasing first and then rising”, and the annual precipitation showed a single-peak distribution. (2) The weather was dominated by no precipitation, and the precipitation was dominated by small-precipitation events in a meadow steppe. The heavy precipitation events were characterized by low occurrence frequency and large precipitation, whereas the small-precipitation events were the opposite. (3) The critical values of precipitation that can cause the response of 0-50 cm soil moisture were 8.1 mm, 10.1 mm, 19.0 mm, 27.9 mm, and 31.6 mm, respectively. The probability of light rain only causing 0-10 cm soil moisture response was 28.6%, whereas moderate rain could not cause 40-50 cm soil moisture response. (4) Precipitation was extreme significantly negatively correlated with the lag time when soil moisture reached the maximum value in 0-10 cm and 10-20 cm, and was significantly negatively correlated with the lag time when soil moisture reached the maximum value in 20-30 cm. The lag time of soil moisture reaching the maximum value in each layer of 0-30 cm accords with the power function relationship with precipitation. (5) There was a significant positive correlation between precipitation and soil moisture increments of 0-50 cm. Precipitation was linear with soil moisture increments of 0-10 cm and 10-20 cm, and polynomial with soil moisture increment of 20-30 cm, 30-40 cm, and 40-50 cm. The model test results showed that the simulation effect of soil moisture increment models in each layer of 0-30 cm was better.

Key words： soil moisture; precipitation events; pulse response; critical value; hysteresis effect; meadow steppe

Cite this article

Cunhou ZHANG , Xiaofeng DUAN , Liping YANG , Kun YUE , Li ZHANG . Characteristics of precipitation and response of soil moisture to precipitation pulse in meadow steppe: A case of Ergun City in Hulunbuir steppe[J]. Arid Land Geography, 2022 , 45(6) : 1881 -1889 . DOI: 10.12118/j.issn.1000-6060.2022.094

References

[1] 柴雯, 王根绪, 李元寿, 等. 长江源区不同植被覆盖下土壤水分对降水的响应[J]. 冰川冻土, 2008, 30(2): 329-337.
[1] [Chai Wen, Wang Genxu, Li Yuanshou, et al. Response of soil moisture under different vegetation coverage to precipitation in the headwaters of the Yangtze River[J]. Journal of Glaciology and Geocryology, 2008, 30(2): 329-337.]
[2] Hu J C, Cao W X, Zhang J B, et al. Quantifying responses of winter wheat physiological processes to soil water stress for use in growth simulation modeling[J]. Pedosphere, 2004, 14(4): 509, doi: 10.1007/s10705-004-4288-7.
[3] Pascual I, Azcona I, Morales F, et al. Photosynthetic response of pepper plants to wilt induced by Verticillium adhliae and soil water deficit[J]. Journal of Plant Physiology, 2010, 167: 701, doi:10.1016/j.jplph.2009.12.012.
[4] 张淑勇, 夏江宝, 张光灿, 等. 黄河三角洲贝壳堤岛叶底珠叶片光合作用对CO2浓度及土壤水分的响应[J]. 生态学报, 2014, 34(8): 1937-1945.
[4] [Zhang Shuyong, Xia Jiangbao, Zhang Guangcan, et al. Photosynthetic responses to changes in CO2 concentration and soil moisture in leaves of Securinega suffruticosa from shell ridge islands in the Yellow River Delta, China[J]. Acta Ecologica Sinica, 2014, 34(8): 1937-1945.]
[5] 范凯凯, 李淑贞, 陈金强, 等. 呼伦贝尔草原土壤呼吸作用空间异质性分析[J]. 草地学报, 2022, 30(1): 205-211.
[5] [Fan Kaikai, Li Shuzhen, Chen Jinqiang, et al. Spatial heterogeneity analysis of soil respiration in Hulunbuir grassland[J]. Acta Agrestia Sinica, 2022, 30(1): 205-211.]
[6] 单立山, 李毅, 段雅楠, 等. 红砂幼苗根系形态特征和水分利用效率对土壤水分变化的响应[J]. 西北植物学报, 2014, 34(6): 1198-1205.
[6] [Shan Lishan, Li Yi, Duan Ya’nan, et al. Response of root morphology and water use efficiency of Reaumuria soongorica to soil water change[J]. Acta Botanica Boreali-Occidentalia Sinica, 2014, 34(6): 1198-1205.]
[7] Huxman T E, Snyder K A, Tissue D, et al. Precipitation pulses and carbon fluxes in semi-arid and arid ecosystems[J]. Oecologia, 2004, 141: 254-268.
[8] Fay P A, Blair J M, Smith M D, et al. Relative effects of precipitation variability and warming on tallgrass prairie ecosystem function[J]. Biogeo-sciences, 2011, 8: 3053-3068.
[9] Knapp A K, Fay P A, Blair J M, et al. Rainfall variability, carbon cycling, and plant species diversity in a mesic grassland[J]. Science, 2002, 298: 2202-2205.
[10] Williams C A, Hanan N, Scholes R J, et al. Complexity in water and carbon dioxide fluxes following rain pulses in an African savanna[J]. Oecologia, 2009, 161: 469-480.
[11] Potts D L, Huxman T E, Cable J M, et al. Antecedent moisture and seasonal precipitation influence the response of canopy-scale carbon and water exchange to rainfall pulses in semi-arid grassland[J]. New Phytologist, 2006, 170: 849-860.
[12] Chen S P, Lin G H, Huang J H, et al. Dependence of carbon sequestration on the differential responses of ecosystem photosynthesis and respiration to rain pulses in a semiarid steppe[J]. Global Change Biology, 2009, 15: 2450-2461.
[13] 赵文智, 刘鹄. 干旱、半干旱环境降水脉动对生态系统的影响[J]. 应用生态学报, 2011, 22(1): 243-249.
[13] [Zhao Wenzhi, Liu Hao. Precipitation pulses and ecosystem responses in arid and semiarid regions: A review[J]. Chinese Journal of Applied Ecology, 2011, 22(1): 243-249.]
[14] Knapp A K, Smith M D. Variation among biomes in temporal dynamics of aboveground primary production[J]. Science, 2001, 291: 481-484.
[15] Blair J M. Fire, N availability, and plant response in grasslands: A test of the transient maxima hypothesis[J]. Ecology, 1997, 78: 2359-2368.
[16] 张存厚, 王明玖, 张立, 等. 呼伦贝尔草甸草原地上净初级生产力对气候变化响应的模拟[J]. 草业学报, 2013, 22(3): 41-50.
[16] [Zhang Cunhou, Wang Mingjiu, Zhang Li, et al. Response of meadow steppe ANPP to cilmate change in Hulunbeier, Inner Mongolia: A simulation study[J]. Acta Prataculturae Sinia, 2013, 22(3): 41-50.]
[17] 张存厚, 杨丽萍, 越昆, 等. 锡林郭勒典型草原土壤水分对降水过程的响应[J]. 干旱区资源与环境, 2022, 36(8): 133-139.
[17] [Zhang Cunhou, Yang Liping, Yue Kun, et al. Response of soil moisture to precipitation process in Xilingol typical grassland[J]. Journal of Arid Resources and Environment, 2022, 36(8): 133-139.]
[18] GB/T28592-2012. 中华人民共和国国家标准: 降水量等级[S]. 北京: 高等教育出版社, 2012.
[18] [GB/T28592-2012. National Standard of the People’s Republic of China: Grade of precipitation[S]. Beijing: Higher Education Press, 2012.]
[19] 樊婷, 张存厚, 张德广, 等. 内蒙古自治区达茂旗荒漠草原土壤水分对降水的响应[J]. 水土保持通报, 2020, 40(1): 72-77.
[19] [Fan Ting, Zhang Cunhou, Zhang Deguang, et al. Effect of precipitation patterns on soil moisture of desert steppes in Damao County, Inner Mongolia[J]. Bulleitin of Soil and Water Conservation, 2020, 40(1): 72-77.]
[20] 何志斌, 赵文智. 半干旱地区流动沙地土壤湿度变异及其对降水的依赖[J]. 中国沙漠, 2002, 22(4): 359-362.
[20] [He Zhibin, Zhao Wenzhi. Variability of soil moisture of shifting sandy land and its dependence on precipitation in semi-arid region[J]. Journal of Desert Research, 2002, 22(4): 359-362.]
[21] Beatley J C. Phenological events and their environmental triggers in Mojave Desert ecosystems[J]. Ecology, 1974, 55: 856-863.
[22] Austin A T, Yahdjian L, Stark J M, et al. Water pulses and biogeochemical cycles in arid and semiarid ecosystems[J]. Oecologia, 2004, 141: 221-235.
[23] Bachman S, Heisler-White J L, Pendall E, et al. Elevated carbon dioxide alters impacts of precipitation pulses on ecosystem photosynthesis and respiration in a semi-arid grassland[J]. Oecologia, 2010, 162: 791-802.
[24] Schwinning S, Osvaldo E S. Hierarchy of responses to resource pulses in arid and semi-arid ecosystems[J]. Oecologia, 2004, 141: 211-220.
[25] Sala O E, Lauenroth W K. Small rainfall events: An ecological role in semiarid regions[J]. Oecologia, 1982, 53: 301-304.
[26] 刘冰, 赵文志, 常学向, 等. 黑河流域荒漠区土壤水分对降水脉动响应[J]. 中国沙漠, 2011, 31(3): 716-722.
[26] [Liu Bing, Zhao Wenzhi, Chang Xuexiang, et al. Response of soil moisture to rainfall pulse in desert region of the Heihe River Basin[J]. Journal of Desert Research, 2011, 31(3): 716-722.]
[27] 原鹏飞, 丁国栋, 王炜炜, 等. 毛乌素沙地降雨入渗和蒸发特征[J]. 中国水土保持科学, 2008, 6(4): 23-27.
[27] [Yuan Pengfei, Ding Guodong, Wang Weiwei, et al. Characteristics of rainwater infiltration and evaporation in Mu Us Sandland[J]. Science of Soil and Water Conservation, 2008, 6(4): 23-27.]
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