Volume 14, Issue 2 (7-2020)
مرتع 2020, 14(2): 184-196 |
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Jalipour M, Chavoshi E, Jalalian A. Interactive effects of animal grazing and land abandonment on infiltration and biological properties of soil in semi-steppe rangelands. مرتع 2020; 14 (2) :184-196
URL: http://rangelandsrm.ir/article-1-900-en.html
URL: http://rangelandsrm.ir/article-1-900-en.html
Department of Soil Science, Collage of Agriculture, Islamic Azad University Isfahan (Khorasgan) Branch
Abstract: (3057 Views)
This study aimed to investigate the restoration of land abandoned for different period of time. The land has been managed under free grazing and control systems. Research questions are: whether land abandonment restores bio-chemical properties of the soil and second whether grazing managements interacts with land abandonment to form a direct soil restoration. Several lands with different abandoned histories including >5, 5-15, 15-30, and longer than 30 years of abandonment and a control (undisturbed rangeland) were selected in two grazing management systems, low intensity (protect areas) and free grazing management. Several soil infiltration variables such as saturated hydraulic conductivity (Kfs), absorption ratio, capillary length and biological parameters such as carbon mineralization, microbial biomass, basal respiration, etc. were analysed in order to compare them among different land abounded histories in both land with low and free grazing management. The results showed that there were no significant differences in Kfs among the treatments but the land abounded more than 30 years history. Moreover, basal respiration significantly decreased with increasing the age of abandonment and became relatively similar to control. Carbon mineralization in land abandonment of protected areas became more rapidly similar to control compared to free grazing management. The results indicate that soil succession in land abundant of free ranging areas with high grazing intensity proceed less rapidly toward climax, however, in protected areas with low grazing intensity, soil relatively resorted and became similar to neighbouring rangelands after 30 years.
Keywords: Land abandonment, saturated hydraulic conductivity, carbon mineralization, microbial biomass, basal respiration, absorption ratio
Type of Study: Research |
Subject:
Special
Received: 2020/07/28 | Accepted: 2020/07/31 | Published: 2020/07/31
Received: 2020/07/28 | Accepted: 2020/07/31 | Published: 2020/07/31
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