The Impact of Different Grazing Intensity on Topsoil Physical and Chemical Properties in Xilamuren Grassland

Abstract:

Grassland is an important ecosystem in land surface. Soil is the basis of grassland ecosystem, and the changes of its properties directly affect grassland ecosystem. The study region is located in Xilamuren grassland using the methods of field sampling and experimental analysis. It was divided into four test areas according to grazing intensity. Soil physical and chemical properties were analyzed in each test area. The results showed that: the trend of soil water content decreased and then increased with increasing grazing intensity, soil water content in repaired grassland was the lowest. For the soil mechanical composition, particle size content increased first and then decreased with increasing grazing intensity when the particle size was 1-0.05mm. The difference between the highest and lowest values was obvious. When the particle size was 0.05-0.002mm, the trend of particle size fluctuated, first decreased and then increased, finally reduce again and the difference between the highest and lowest values was obvious. When the particle size was less than 0.002mm, the trend of particle size content increased with increasing grazing intensity. In soil chemical properties, soil organic matter appears downward trend overall as grazing intensity increase. Soil organic matter content was the lowest in repaired grass. Available N and P first decreased and then increased with increasing grazing intensity, the minimum values appeared in the repaired grassland and degraded grassland respectively. Available K content increased with increasing grazing intensity.

• Periodical: Applied Mechanics and Materials (Volumes 295-298)
• Pages: 2090-2096
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.295-298.2090
• Online since: February 2013
• Authors: Yi Fang*, Xiao Jia Li, Cong Cong Chen, Min Zhang, Rui Ping Zhou, Tian Ming Gao, Rui Qiang Zhang, Chun Xing Hai
• Keywords: Grazing Intensity, Physical and Chemical Properties, Topsoil, Xilamuren Grassland

References

[1] Lin Meng. Progress of comprehensive grassland resources evaluation[J]. Foreign animal husbandry- grassland and forage, 1998, （4）: 1～6.

[2] Zhihong Xue. Effect of Soil Physical Character and Plant Community in Leymus chinensis Steppe Under Grazing Intensities[D]. Hohhot: Inner Mongolia Agricultural University Doctoral thesis, 2007. 5.

[3] Hongshan Yang, Ruifeng Liu, Junping Zhang, Aiqin Wang. Effects of Poly(acrylic-acylamide)/attapulgite Superabsorbent Composite on Soil Water Content and Physical Properties[J]. Journal of Soil and Water Conservation, 2005, 19(3): 38-41.

[4] Ying Zhi Gao, Xing Guo Han, Shi Ping Wang. The effects of grazing on grassland soils[J]. Acta Ecologica Sinica, 2004, 24(4): 790-797.

[5] Kainer k A，Duryea M L，Costa de Macedo N，et al. Brazil nut seedling establishment and autecology in extractive reserves of Acre，Brazil. Ecol. Appl. ，1998，8(2)：397-410.

DOI: 10.1890/1051-0761(1998)008[0397:bnseaa]2.0.co;2

[6] Kobayashi T，Hori Y，Nomoto N. Effects of trampling and vegetation removal on species diversity and microenvironment under different shade conditions.J. Veget，Sci，1997，8(6): 873～880.

DOI: 10.2307/3237032

[7] Yongzhong Su, Halin Zhao, Haiyan Wen. Cultivation and Enclosure Effects on Soil Physicochemical Properties of Degraded Sandy Grassland[J]. Journal of Soil and Water Conservation, 2002, 16(4): 5-8, 126.

[8] Weihua Zhang, Shiying Guan, Yongzhi Wu. Effect of Graxing Capacity on Water content, Nutrient and Biomass of Steppe Soil[J]. Journal of Arid Land Resources and Environment，2002，14（4）61～64.

[9] Haikun Pei. Effect of different grazing intensity on soil nutrient and texture [J]. Journal of Qinghai University，2004，22（4）29-31.

[10] Aixing Yao, Pei Wang, Jingxin Xia and Fencheng Fan. Effects of Different Grazing Intensity for Dairy Cows on Soil Characteristics of Perennial Ryegrass/White Clover Sward[J]. Acta Agrestia Sinica, 1995. 3(3)：95-102.

[11] Mingjun Wang. Effects of different grazing inrensities on grassland ecosystem health of leymus chinensis meadow steppe[D]. Hohhot: Inner Mongolia Agricultural University Doctoral thesis. 2008. 4.

[12] Shaoliang Li, Youjun Chen, Shian Kang, Shiying Guan. Relationships Between Soil Degradation and Rangeland Degradation[J]. Journal of Arid Land Resources and Environment, 2002, 16(1): 92-95.

[13] Shuhai Jia, Chunzhi Wang, Zhentao Sun. Study on Grassland Dark Sandy Chestnut Compaction by Grazing Intensity and Grazing Season[J]. Acta Agrestia Sinica, 1999, 7(3): 217-221.

[14] Jianping Zhang, Shuzhen Liu, Lin Zhou, Yiping Fang. Soil Degradation of Main Grassland in Naqu Area of Tibet[J]. Journal of Soil Erosion and Soil and Water Conservation, 1998, 12(3): 6-11.

[15] Xiaoli Hao. Effect of Grazing on Community Characteristics, Soil Properties and Species Diversity of Stipa Baicalensis Steppe[D]. Hohhot: Inner Mongolia Agricultural University Doctoral thesis，2007. 5.

[16] Hui Shen, Fengqi Jiang, Xiaojun Du, Hao Guo, Shizhong Wang. Study on Soil Fertility of Water and Soil Conservation Forest and Its Evaluation Indexes[J]. Journal of Soil Water Conservation, 2000, 14(2): 60-65.

[17] Jie Gong, Liding Chen, Bojie Fu, Chenxia Hu, Wei Wei. Effects of Vegetation Restoration on Soil Nutrient in a Small Catchment in Hilly Loess Area[J]. Journal of Soil Water Conservation, 2005, 19(1): 93-96.