Effects of geomorphology and soil conditions on vegetation structure in conserved desert wadis: A case study of Jal Al-Zor escarpment, Kuwait Effects of geomorphology and soil conditions on vegetation structure in conserved desert wadis: A case study of Jal Al-Zor escarpment, Kuwait

最小化 最大化

Vol17 No.3: 588-601

Title】Effects of geomorphology and soil conditions on vegetation structure in conserved desert wadis: A case study of Jal Al-Zor escarpment, Kuwait

Author】Raafat H. ABD El-WAHAB1,2*; Mohammed A. BIHZAD2; Alham J. AL-LANGAWI2

Addresses】1 Botany Department, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt; 2 Science Department, College of Basic Education, Public Authority for Applied Education and Training, Adailiya 73251, Kuwait

Corresponding author】Raafat H. ABD El-WAHAB

Citation】Abd El-Wahab RH, Bihzad MA, Al-Langawi AJ, et al. (2020) Effects of geomorphology and soil conditions on vegetation structure in Conserved Desert Wadis: A Case Study of Jal Al-Zor Escarpment, Kuwait. Journal of Mountain Science 17(3). https://doi.org/10.1007/s11629-019-5538-0

DOI】https://doi.org/10.1007/s11629-019-5538-0

Abstract】Variations in phytogeography of Jal Al-Zor wadi system in Sabah Al Ahmad Nature Reserve, an arid national park in Kuwait, in relation to physiographic and edaphic conditions were investigated using alpha diversity and multivariate analyses. A total of 66 plant species were recorded at low-relief and high-relief wadis. Altitude and slope gradients, grain size distribution and soil texture properties had a significant relationship with plant cover and plant diversity. There was a high diversity of life-forms along the wadi system with a dominant of therophytes (annuals) particularly in spring after winter rainfalls. Chamaephytes and hemicryptophytes were the dominant perennial life-forms. A chorological analysis documents the strong effect of Saharo-Arabian chorotype on the vegetation of the study area. Cluster analysis clarified eight vegetation assemblagesalong altitude and slope gradients within the wadi system.  Alpha diversity of plant species was greater in plant assemblages at low-relief wadis than at high-relief wadis. Vegetation structure in this study showed that phytogeographically, wadis of Jal Al-Zor were closely related to the wadis in the Arabian deserts.The slope gradient pattern and edaphic conditions of plant assemblages and plant diversity in the conserved wadis of Jal Al-Zor may be suggested as a reference model for restoration strategy of disturbed low elevated wadis in the surrounding desert regions. Restoration would include propagation of suitable plants such as Stipagrostis plumosa - Haloxylon salicornicum - Rhanterium epapposum.

Keywords】Arabian desert; Vegetation structure; Wadi system; Alpha diversity; Clustering analysis