M. Serag, Abdelhamid A Khedr, Reham M. Nada, Nesma M El-Qashlan
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引用次数: 0
摘要
鸢尾属植物耐盐碱和干旱,因此适合恢复退化的干旱和半干旱土地。许多 Atriplex 品种作为非传统饲料也具有很高的效益。本研究的目的是评估埃及地中海沿岸地区四种鸢尾属植物的栖息地范围。其中两个物种具有 C 3 光合作用,它们是portulacoides 和 A. prostrata),另外两个具有 C 4 光合作用(A. halimus 和 A. nummularia)。这四个物种生长在地中海沿岸从新达米埃塔到布拉鲁斯湖的不同栖息地。确定了与 Atriplex 相关的物种,并采集了土壤样本以确定栖息地类型。对土壤样本进行了分析,以根据栖息地对 C 3 和 C 4 物种进行比较。土壤分析结果表明,C 4 物种生长土壤的导电率高于 C 3 物种,C 4 物种生长土壤的 Cl -、CO 3 - 和有机碳百分比(%)高于 C 3 物种,此外,C 3 物种生长土壤的含水量高于 C 4 物种生长土壤的含水量。从土壤变量中获得的结果将有助于了解埃及地中海沿岸 C 3 和 C 4 Atriplex 树种的最佳栖息地。此外,获得的数据还有助于这些重要的卤叶植物在农业上的应用。
Habitat Range of Four Atriplex Species Growing in the Mediterranean Coast of Egypt
Atriplex species are tolerant to salinity and drought, therefore; they are an appropriate for restoration of degraded arid and semi-arid lands. Lots of Atriplex species offer a high benefit as non-traditional forages as well. The purpose of this study is to evaluate the habitat range of four Atriplex species in the coastal area of the Mediterranean Sea of Egypt. Two of these species have C 3 photosynthesis; they are namely: A. portulacoides and A. prostrata and the other two are C 4 photosynthesis ( A. halimus and A. nummularia) . The four species are growing in the different habitats along the Mediterranean Coast from New Damietta to Burullus Lake. Associated species with Atriplex were determined and soil samples were collected to identify the types of habitats. Soil samples were analyzed to compare between C 3 and C 4 species on the basis of habitat. Results of soil analysis indicated that EC of the soil in which C 4 species grow is more than that of C 3 species and the percentages (%) of Cl - , CO 3 - and organic carbon of the soil in which C 4 species grow are more than that of C 3 species, moreover, the moisture content of the soil in which C 3 species grow is higher than that of the soil in which C 4 species grow. The obtained results from the soil variables will be useful for the understanding of the optimal habitat for C 3 and C 4 Atriplex species in the Mediterranean Coast of Egypt . Furthermore, the obtained data will help for the agro-application of these important halophytes .