Landscape ecology of uncultivated lowlands in central Spain

被引:13
作者
Bernaldez, F. G. [1 ]
Rey Benayas, J. M.
Levassor, C.
Peco, B.
机构
[1] Univ Autonoma Madrid, Dept Interuniv Ecol, E-28049 Madrid, Spain
关键词
Aquifer discharge habitats; Central Spain; halophilous vegetation; wetland ecology; wetland conservation; grassland ecology; wildlife conservation; saline soils;
D O I
10.1007/BF00157752
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
The relationship between groundwater and landscape in representative areas of the Spanish plateaux is discussed, with special attention given to the Douro River basin. The study focusses on the transference of water and matter that is conditioned by groundwater flow systems, and also on water bodies, wet meadows, marshes, saline soils under their influence. These factors are of great importance in semiarid areas. Using photointerpretation, interviews, vegetation plots, water samples from wells and springs and soil samples, and the results of data processing (principal component analysis, shared information) we find that hydrological processes are the main controlling factor in the ecological function and variation of uncultivated lowlands. These processes include the alternation of recharge and discharge areas, the geochemical evolution of groundwater and the independent flows of the regional system. The landscapes in recharge and discharge areas are compared, as well as the influence of the evolutionary stage of the groundwater in the latter areas (glycophyte or halophyte vegetation). After observing the ecological importance of these aquifer discharges systems, the causes of their accelerated transformation are analyzed.
引用
收藏
页码:3 / 18
页数:16
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