Yair A, Danin A
Department of Geography, The Hebrew University of Jerusalem, Sde Boqer, Jerusalem, Israel.
Institute for Desert Research, Sde Boqer, Jerusalem, Israel.
Oecologia. 1980 Jan;47(1):83-88. doi: 10.1007/BF00541779.
A detailed study of the distribution of plant communities was conducted in an experimental site, located in the arid northern Negev of Israel, where the spatial variation in rainfall, runoff and soil moisture regime are currently being studied. Phytogeographical methods of analysis usually used for studies on a regional scale were applied for a small area extending over 11,325 m of a north-facing hillside. Data obtained indicate that the best water regime and a high diversity of plant species are characteristic of a massive limestone rock unit; whereas worse water regimes characterize densely jointed and thinly bedded limestones. Over slopes, developed in a uniform lithology, whose lower part is composed of a colluvial mantle, a gradual downslope worsening of the soil moisture regime is recorded within the colluvium. These changes are well expressed in the distribution of the plant communities and their phytogeographical affinities along the slopes.
在以色列内盖夫北部干旱地区的一个实验场地，对植物群落分布进行了详细研究，该场地目前正在研究降雨、径流和土壤水分状况的空间变化。通常用于区域尺度研究的植物地理学分析方法，被应用于一个朝北山坡上面积为11325平方米的小区域。获得的数据表明，大量的石灰岩岩石单元具有最佳的水分状况和丰富的植物物种多样性；而节理密集和薄层状的石灰岩则具有较差的水分状况。在由均匀岩性形成的斜坡上，其下部由崩积层组成，在崩积层内记录到土壤水分状况沿斜坡逐渐变差。这些变化在植物群落的分布及其沿斜坡的植物地理学亲缘关系中得到了很好的体现。
