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[1]GAO Yuan,SHI Haijing,DING Chengqin,et al.Buffering Effect of Artificial Robinia pseudoacacia Forest on Temperature and Humidity in Loess Hilly Region[J].Research of Soil and Water Conservation,2023,30(05):175-183.[doi:10.13869/j.cnki.rswc.2023.05.025.]

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Buffering Effect of Artificial Robinia pseudoacacia Forest on Temperature and Humidity in Loess Hilly Region

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 30 Number of periods: 2023 05 Page number: 175-183 Column: Public date: 2023-08-10

Title:: Buffering Effect of Artificial Robinia pseudoacacia Forest on Temperature and Humidity in Loess Hilly Region

Author(s):: GAO Yuan^1,2,3, SHI Haijing^1,2, DING Chengqin⁴, ZHENG Cheng⁵, JIANG Yanmin^1,2, ZHANG Yan^1,2,3; (1.Research Center of Soil and Water Conservation and Ecological Environment,Chinese Academy of Sciences and Ministry of Education,Yangling,Shaanxi 712100,China; 2.Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China; 3.University of Chinese Academy of Sciences,Beijing 100049,China; 4.Institute of Soil and Water Conservation,Northwest A&F University,Yangling,Shaanxi 712100,China; 5.College of Grassland......)

Keywords:: temperature; humidity; artificial R. pseudoacacia forest; buffering effect on temperature and humidity

CLC:: S716

DOI:: 10.13869/j.cnki.rswc.2023.05.025.

Abstract:: [Objective] The buffering effect of artificial R. pseudoacacia forest on environmental temperature and humidity in the loess hilly area was studied, and the buffering characteristics of forest belts on environmental climate at different time scales and the relationship between forest microclimate effect and environmental factors were explored, so as to provide reference for community construction and vegetation restoration in the loess hilly area. [Methods] The artificial R. pseudoacacia forest planted in the same year in this area was taken as an example, and air temperature(T_a), near surface temperature(T_ns), soil temperature(T_s)and air relative humidity(RH)inside and outside of the forest continuously for a whole year were measured. The climate buffering effects of artificial R. pseudoacacia forests at different time scales were quantified. [Results] The annual average T_a, T_ns, T_s and RH in the forest were lower by 0.13℃, 0.99℃, 0.92℃ and 0.16%, respectively, than those outside of the forest. During 14:00 to 16:00 of a day, the T_a, T_ns and T_s inside of the forest were 1.08℃, 4.17℃ and 1.88℃ lower, respectively, than those outside of the forest, while the RH of air was 2.72% higher. During 5:00 to 7:00, the T_a and T_ns inside of forest were 0.45℃ and 0.58℃ higher than those outside of forest, respectively, and the RH was 1.80% lower than that outside of forest. The T_a, T_ns and T_s inside of forest were lower by 0.76℃, 2.17℃ and 3.29℃ than those outside of the forest in July, respectively, and the RH was higher by 1.67%, than that outside of the forest in July. In January, when extreme low temperature occurred, the T_a and T_s in the forest were 0.28℃ and 0.87℃ higher, T_ns was 0.20℃ lower than those outside the forest, respectively, and RH was 1.16% lower than that outside the forest. The buffering effect of artificial R. pseudoacacia forest varied with change of environmental climate. When the T_a, T_ns and T_soutside the forest were higher than 16.70℃, 9.89℃ and 1.43℃ respectively, the buffering value was positive(inside the forest was warmer than outside), while they were lower than those, the buffering value was negative. The relationship between temperature and buffering value was cubic. With the increase or decrease of temperature, the absolute value of buffering value increased at a faster rate. [Conclusion] The temperature and humidity in the forest were more stable than that those outside the forest with the buffering effect of artificial R. pseudoacacia forest, forming a unique microclimate superior to the environmental climate outside the forest.

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Last Update: 2023-08-10