Using meteorological and remote sensing data and changes in vegetation cover during the wind erosion season in northern China, a revised wind erosion equation was applied to evaluate spatiotemporal variation in soil erosion and conservation since the 1990s, and to reveal the effects of the change of vegetation coverage on the wind erosion control service. The results showed that average soil erosion in northern China between 1990 and 2010 was 16.01 billion tons and was decreasing. The most seriously eroded areas were mainly distributed in large desert areas or low cover grasslands. Most wind erosion occurred in spring, accounting for 45.93% of total wind erosion. The average amount of sand fixation service function for northern China between 1990 and 2010 was 20.31 billion tons. Given the influence of wind erosion forces, the service function for sand fixation cannot effectively highlight the role of sand fixation from the ecosystem itself. The retention rate of service function for sand fixation reveals the role of the ecosystem itself. The distribution characteristics of the soil retention rate are similar to vegetation cover, which shows a gradual decrease from southeast to northwest in the study area. Improved spring vegetation cover was observed mainly on the Loess Plateau, Qinghai-Tibet Plateau, in northern Hebei, eastern Inner Mongolia and northeast China after the implementation of ecosystem projects. The soil retention rate in most areas showed a significant positive relationship with grassland vegetation in spring (r > 0.7, p < 0.01). The increments of ecosystem service function for various ecological systems are different. Increments for the grassland ecosystem, forest ecosystem, farmland ecosystem and desert ecosystem are 2.02%, 1.15%, 0.99% and 0.86%, respectively.
GONG Guoli, LIU Jiyuan, SHAO Quanqin, ZHAI Jun
. Sand-fixing Function under the Change of Vegetation Coverage in a Wind Erosion Area in Northern China[J]. Journal of Resources and Ecology, 2014
, 5(2)
: 105
-114
.
DOI: 10.5814/j.issn.1674-764x.2014.02.002
Buchan G D, K S Grewal, A B Robson. 1993. Improved models of particlesize distribution: An illustration of model comparison techniques. Soil Science Society of America Journal, 57: 901-908.
Che T. 2011. Long term snow depth dataset of China (1978-2012). Lan Zhou: Chinese Academy of Sciences, Cold and Arid Regions Environmental and Engineering Research Institute. (in Chinese)
Chepil W S, N P Woodruff, F H Siddoway, et al. 1963. Vegetative and nonvegetative materials to control wind and water erosion. Soil Science Society Proceedings, 27(1): 86-89.
Crawford J W, B D Sleeman, I M Young. 1993. On the relation between number-size distributions and the fractal dimension of aggregates. European Journal of Soil Science, 44: 555-565.
Dai L Y, Che T, Wang J, et al. 2012. Snow depth and snow water equivalent estimation from AMSR-E data based on a priori snow characteristics in Xinjiang, China. Remote Sensing of Environment, 127: 14-29.
Deng Z Y, Wang Q, Zhang Q, et al. 2010. Impact of climate warming and drying on food crops in Northern China and the countermeasures. Acta Ecologica Sinica, 30(2): 6278-6288. (in Chinese)
Dong G R, Li C Z, Jin J et al. 1987. Some simulation experimental results of wind erosion in wind tunnel. Chinese Science Bulletin, 32(4): 297-301. (in Chinese)
Fang J Y, Piao S L, He J S, et al. 2003. Vegetation of China invigorated in last 20 years. Science in China: Series C, 33: 554-565. (in Chinese)
Fryrear D W, A Saleh, J D Bilbro, et al. 1998. Revised wind erosion equation (RWEQ). Washington: Wind Erosion and Water Conservation Research Unit, Technical Bulletin 1, Southern Plains Area Cropping Systems Research Laboratory, USDA-ARS.36-51.
Fryrear D W, C A Krammes, D L Williamson, et al. 1994. Computing the wind erodible fraction of soils. Soil Water Conservation, 49(2):183-188.
Fryrear D W. 1985. Soil cover and wind erosion. Transactions of the ASAE, 28(3):781-784.
Fryrear D W, M M Wassif, S F Tadrus, et al. 2008. Dust measurements in the Egyptian northwest coastal zone. Transactions of American Society of Agricultural and Biological Engineers, 51(4):1255-1262.
Guo Z L, T M Zobeck, J E Stout, et al. 2012. The effect of wind averaging time on wind erosivity estimation. Earth Surface and Landforms, 37: 797-802.
Guo Z L. 2012. Improvement and application of RWEQ model in North China. Beijing: Beijing Normal University, 38-40. (in Chinese)
Gutman G, A Ignatov. 1998. The derivation of the green vegetation fraction from NOAA/AVHRR data for use in numerical weather prediction models. International Journal of Remote Sensing, 19(8): 1533-1543.
Huang G. 2006. The phenomenon of global climate change associated with droughts in North China. Research of Climate and Environment, 11(3): 270-279.
Kurosaki Y, Mikami M. 2007. Threshold wind speed for dust emission in east Asia and its seasonal variations. Journal of Geophysical Research, 112, D17202, doi: 10.1029/2006JD007988.
Li X B, Shi P J. 1999. Research on regulation of NDVI change of Chinese primary vegetation types based on NOAA/AVHRR data. Acta Botanica Sinica, 41(3):314-324. (in Chinese)
Liu J Y, Qi Y Q, Shi H D, et al. 2007. Tracing analysis by 137Cs in the study of wind erosion rate in transect of Taliyate-Xilinguole in Mongolia Plateau. Chinese Science Bulletin, 52(23):2785-2791. (in Chinese)
Press W H, S A Teukolsky, W T Vetterling, et al. 1992. Numerical recipes in Fortran. Cambridge: Cambridge University Press.
Qi Y Q. 2008. Wind erosion and its soil ecological effects of Mongolia Plateau. Beijing: Institute of Geographic Sciences and Natural Resources Research, 46-59. (in Chinese)
Saleh A. 1993. Soil roughness measurement: Chain method. Journal of Soil and Water Conservation, 48(6): 527-529.
Skaggs T H, L M Arya, P J Shouse, et al. 2001. Estimating particles-size distribution from limited soil texture data. Soil Science Society of America Journal, 65: 1038-1044.
Wang J A, Zuo W, Wang W, et al. 2010a. Geographic atlas of China. Beijing: China Atlas Press, 180. (in Chinese)
Wang J A, Zuo W, Wang W, et al. 2010b. Geographic atlas of China. Beijing: China Atlas Press, 30. (in Chinese)
Wolf S A, W G Nickling. 1993. The protective role of sparse vegetation in wind erosion. Progress in Physical Geography, 17(1): 50-68.
Wolf S A, W G Nickling. 1996. Shear stress partitioning in sparsely vegetated desert canopies. Earth Surface Processes and Landforms, 21: 607-620.
Yan P, Dong G R, Zhang X B. et al. 2000. Preliminary results of wind erosion determined by 137Cs technique in Qinghai-Xizhang Plateau. Chinese Science Bulletin, 45(2): 198-204. (in Chinese)
Yang X H, He Q, Ding G F, et al. 2000. The study on observation experiment of wind erosion over the Hinterland of Taklimakan desert. Desert and Oasis Meteorology, 6(5): 67-72. (in Chinese)
Youssef F, S Visser, D Karssenberg, et al. 2012. Calibration of RWEQ in a patchy landscape: A first step towards a regional scale wind erosion model. Aeolian Research, 3(4):467-476.
Zhai P M, Pan X H. 2003. Change in extreme temperature and precipitation over Northern China during the second half of the 20th century. Acta Geographica Sinica, 58(Supp.): 2-10.
Zobeck T M, T E Gill, T W Popham. 1999. A two-parameter Weibull function to describe airborne dust particle size distribution. Earth Surface and Landforms, 24: 943-955.
Zobeck T M. 1991. Abrasion of crusted soils: Influence of abrader flux and soil properties. Soil Science Society of America Journal, 55(4): 1091-1097.