| Effect of agroforestry on microclimate environment (near land surface) |
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| DOI：10.7606/j.issn.1000-7601.2017.05.04 |
| Key Words: agroforestry microclimate intercropping walnut wheat |
| Author Name | Affiliation | | WANG Lai | College of Forestry, NorthwestA&F University, Yangling, Shaanxi 712100, China | | GAO Peng-xiang | College of Forestry, NorthwestA&F University, Yangling, Shaanxi 712100, China | | LIU Bin | College of Forestry, NorthwestA&F University, Yangling, Shaanxi 712100, China | | HOU Lin | College of Forestry, NorthwestA&F University, Yangling, Shaanxi 712100, China
Qinling National Forest Ecosystem Research Station, Yangling, Shaanxi 712100, China | | ZHANG Shuo-xin | College of Forestry, NorthwestA&F University, Yangling, Shaanxi 712100, China
Qinling National Forest Ecosystem Research Station, Yangling, Shaanxi 712100, China |
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| Abstract: |
| The influence of agroforestry system on microclimate environment near land surface was studied by means of walnut (Juglans regia) and wheat (Triticum aestivum) intercropping system, a widespread local agroforestry model in northern Wei River of loess area, with the two monoculture systems as the control. The purposes of this research was to provide theoretical basis for modeling and managing the agroforestry system scientifically. The results showed that the average air temperature during February～October of the intercropping system was 0.66℃ and 0.97℃ lower than that of the walnut and wheat monoculture systems respectively, on the contrary, 0.49℃ and 0.40℃ higher than the two monoculture systems respectively during November and January. The air relative humidity of the intercropping system every month was higher than that of the two monoculture systems, the annual average higher than the walnut monoculture and wheat monoculture by 14.33% and 19.98%, respectively. The wind speed of the intercropping system every month was lower than that of the two monoculture systems, the annual average was lower than that of walnut monoculture and wheat monoculture by 26.32% and 30.00%, respectively. The relative illumination of the intercropping system every month was lower than that of the two monoculture systems, the annual average was lower than that of walnut monoculture and wheat monoculture by 21.33% and 45.93%, respectively. The average ground temperature during February～October was lower in the intercropping system than that of the walnut monoculture and wheat monoculture respectively by 0.71℃ and 1.41℃, on the contrary, 1.01℃ and 0.69℃ higher than the two monoculture systems respectively during November～January. The soil moisture of the intercropping system was less than the two monoculture systems during April～May, yet it rose from June to July rapidly, higher than the two monoculture systems during July～September. Walnut-wheat intercropping system could reduce the soil temperature, air temperature, wind speed and relative illumination of near land surface in high temperature season. It is very important for reducing soil surface evaporation. |
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