Wind erosion resistance of litter of Salix psammophila community in the southeast edge of Mu Us Sandy Land， China

doi:10.7522/j.issn.1000-694X.2021.00138

Journal of Desert Research ›› 2022, Vol. 42 ›› Issue (1): 134-138.DOI: 10.7522/j.issn.1000-694X.2021.00138

Wind erosion resistance of litter of Salix psammophila community in the southeast edge of Mu Us Sandy Land， China

Xiaoqin Yuan¹(), Shengquan Liu², Feng Ai³, Zheng Zhang³, Qiang Li³(), Jinyu Jiang⁴, Changchun Shi⁴

^1.Yulin Forest Seedling Workstation，Yulin 719000，Shaanxi，China
^2.Yulin Forestry Workstation，Yulin 719000，Shaanxi，China
^3.Shaanxi Key Laboratory of Ecological Restoration in Northern Shaanxi Mining Area，Yulin University，Yulin 719000，Shaanxi，China
^4.Shaanxi Academy of Forestry，Xi’an 710082，China

Received:2021-06-16 Revised:2021-10-14 Online:2022-01-20 Published:2022-01-28
Contact: Qiang Li

Abstract

Abstract:

Surface litter is an important part of the ecosystem in Mu Us Sandy Land， and wind erosion is an important factor affecting litter volume and redistribution. In this paper， the characteristics of litter composition and its response to soil wind erosion of Salix psammophila community were analyzed by field investigation and indoor wind tunnel test. The results showed that：（1） Branches and leaves account for 56% and 30% of the surface material composition of Salix psammophila litter， respectively， and the litter biomass decreases significantly with the increase of the distance from the base of Salix psammophila （30-90 cm）. （2） The soil loss decreases exponentially with the increase of the litter biomass （200-800 g·m^-2）， especially with the treatment of 400 g·m^-2. （3） Compared with the leaves， the branches of Salix psammophila community litter play a leading role in wind erosion resistance. The research is expected to provide some scientific basis for vegetation construction and ecological reconstruction in Mu Us Sandy Land.

Key words: Salix psammophila, litter, soil wind erosion, Mu Us Sandy Land

CLC Number:

Q948

Xiaoqin Yuan, Shengquan Liu, Feng Ai, Zheng Zhang, Qiang Li, Jinyu Jiang, Changchun Shi. Wind erosion resistance of litter of Salix psammophila community in the southeast edge of Mu Us Sandy Land， China[J]. Journal of Desert Research, 2022, 42(1): 134-138.

Figures/Tables 7

Fig.1 Distribution of Salix psammophila litters

Table 1 Soil properties at sampling point

距树冠位置/cm	有机质 /(g·kg^-1)	有效氮 /(mg·kg^-1)	速效磷 /(mg·kg^-1)	速效钾 /(mg·kg^-1)
30	6.49±0.83	45.72±3.57	4.59±0.76	143.6±5.6
60	4.53±0.74	28.16±1.26	1.23±0.12	114.2±3.1
90	4.17±0.42	7.85±0.66	0.68±0.04	63.1±2.8

Fig.2 Diagram of wind tunnel and simulated process

Fig.3 Proportion of Salix psammophila litter components

Fig.4 Composition characteristics of Salix psammophila litter at sampling point

Fig.5 Effect of litter biomass on wind erosion

Fig.6 Variation of wind erosion under different branch leaf ratio treatments

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Wind erosion resistance of litter of Salix psammophila community in the southeast edge of Mu Us Sandy Land， China

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