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[1]Han Qingchi,Sun Kai,Pei Zhiyong,et al.Comparative Study on Water Holding Performance of Typical Stands in Arid and Semi-arid Areas[J].Research of Soil and Water Conservation,2024,31(03):239-246.[doi:10.13869/j.cnki.rswc.2024.03.026]

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Comparative Study on Water Holding Performance of Typical Stands in Arid and Semi-arid Areas

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 31 Number of periods: 2024 03 Page number: 239-246 Column: Public date: 2024-04-30

Title:: Comparative Study on Water Holding Performance of Typical Stands in Arid and Semi-arid Areas

Author(s):: Han Qingchi¹, Sun Kai¹, Pei Zhiyong¹, Chen Hongwei², Cao Yanwei³, Sun Xiaotian¹; (1.College of Energy and Transportation Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China; 2.Forestry and Grassland Administration, Ordos City, Inner Mongolia 017000, China; 3.Inner Mongolia Ordos Science and Technology Development Center, Ordos City, Inner Mongolia 017000, China)

Keywords:: arid and semi-arid region; stand water holding capacity; fuzzy matter-element model; European-style closeness

CLC:: S715.7

DOI:: 10.13869/j.cnki.rswc.2024.03.026

Abstract:: [Objective] Water supply is the determinant factor restricting the development of arid and semi-arid areas. Therefore, scientific evaluation of the water-holding performance of typical stands in arid and semi-arid areas is an important basis for planning shelterbelt construction, regulating stand structure and selecting tree species. [Methods] Five typical plantation forests in Ordos Afforestation Field in Kubuqi Desert were taken as the research objects. The water-holding performance of canopy, understory vegetation, litter and soil layers were analyzed by field harvesting method and indoor immersion method. The fuzzy matter-element model was introduced to quantitatively evaluate the water-holding performance of different forest stands combining with European-style closeness. [Results](1)The canopy water-holding capacity of different tree species was significantly different, showing as the order: dry willow and poplar mixed forest>elm forest>poplar forest>salix forest>Pinus sylvestris forest, and the stand water holding capacity was between 2.36～9.98 t/hm².(2)The water holding capacity of understory vegetation in each stand was between 0.84～3.66 t/hm², and the biomass was between 1.33～3.92 t/hm². The biomass showed the same trend as the water holding capacity.(3)The water holding capacity of litter was between 1.96～29.25 t/hm², and the biomass was between 1.43～13.62 t/hm². The logarithmic function and power function could better describe the dynamic water holding capacity and dynamic water absorption rate of litter.(4)The soil capillary water holding capacity of each stand was between 543.80～645.71 t/hm², and the saturated water holding capacity was between 562.87～694.78 t/hm².(5)The European-style closeness decreased in the order: willow mixed forest(0.805 6)>salix forest(0.387 7)>elm forest(0.374 7)>poplar forest(0.357 2)>sylvestris pine forest(0.163 2). The greater the European-style closeness, the stronger the water-holding capacity of the stand. Among the five forest types, the water-holding capacity of the mixed willow forest was the strongest, and that of the sylvestris forest was the worst. [Conclusion] It is suggested that the proportion of mixed forests should be appropriately increased, and more forest stands should be rationally matched to construct and protect shelterbelts in the construction of artificial shelterbelts in arid and semi-arid areas in the future.

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Last Update: 2024-04-30