Degradation and Rehabilitation of Natural Land

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Monjeri F, Kiani B, Tabandeh Saravi A, Falahati A. Investigating the Results of Natural Lands Restoration by Implementing Wild Pistachio and Mountain Almond Reforestation in Khatam County, Yazd Province. Degrad Rehabil Nat Land 2020; 1 (1) :33-44
URL: http://drnl.sanru.ac.ir/article-1-142-en.html

Assessing the success of tree plantations created by executive agencies can be a valuable guide to draw a future path for restoration of forest lands. In order to evaluate the success and impact of pistachio and almond reforestation in the rehabilitation of forest lands in the south of Yazd province, a 157 -hectare area was selected and divided into sections based on planting method. In each section, survival and seedling dimensions were measured. The results of direct sowing and inverted potting methods as well as continuous irrigation and first year irrigation methods were compared by independent t-test. Direct sowing, inverted potting and seedling planting methods were also compared by analysis of variance. Transect method was used to study the richness of herbaceous plants. The results showed that in the first year irrigation section, the total survival rate was 77% and the inverted potting method was more successful than direct sowing. In the continuous irrigation section, the survival rate of pistachio by inverted potting method was 38.8%, direct sowing of almonds was 69.9%, inverse potting was 84.5% and seedling planting was 86.9%. There were a total of 35 plant species in the planting sector and 14 species in the grazing sector. Grass cover density in the planting area was 1.68 seedling.m^-2 and cover was 32% vs 0.49 seedling.m^-2 and the coverage was 3.91% in the area under grazing. According to the results, the rainfall of the region alone is sufficient for success in almond reforestation. Of course, almond seedling planting with irrigation has also had a significant survival. In general, for almond, seedling planting and inverted potting method are considered suitable but direct sowing has less viability. Also, pistachio reforestation without pioneer species is not recommended and preferably must be done after rehabilitation of nurse trees. Restoration of rangeland cover and the presence of natural regeneration of pioneer species between rows show a positive trend of land reclamation in the area.