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首页> 外文期刊>Landscape and Urban Planning >Use of vegetation to combat desertification and land degradation: recommendations and guidelines for spatial strategies in Mediterranean lands.
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Use of vegetation to combat desertification and land degradation: recommendations and guidelines for spatial strategies in Mediterranean lands.

机译：利用植被抗击荒漠化和土地退化：地中海土地空间战略的建议和准则。

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摘要

A strategy for use of vegetation to control soil erosion has been developed that is spatially targeted at hotspots and flow pathways in the landscape. It is based on the premise that most of the soil erosion in semi-arid areas is by water erosion along specific flow lines. Soil is removed from fields and transported downslope and into channels if the connectivity of flow and sediment pathways is high, causing offsite problems as well as loss of agricultural productivity. Vegetation can reduce that connectivity by decreasing erosion and increasing sedimentation. The research combines mapping and analysis of the connectivity pathways and erosion hotspots with analysis of the most effective indigenous plants to control erosion and suited to the particular landscape position and environment. The crucial innovative element is the combination of physical process understanding with plant ecology, and its spatial application. The scheme has been developed by research in the driest part of the European Mediterranean region, in SE Spain, and examples of application strategies are illustrated. It is particularly suited to upland rain-fed agricultural areas on soft rocks, which are highly vulnerable to land degradation. Recommendations are provided on locations for planting or encouraging vegetation growth and on suitable species. The spatially targeted strategies apply vegetation to the critical locations to intervene in the pathways and this minimal intervention approach still allows cultivation of fields. The methods proposed can form the basis for sustainable catchment management to combat soil erosion and desertification.
机译：已经开发出一种使用植被控制土壤侵蚀的策略，该策略在空间上针对景观中的热点和流动路径。它基于这样一个前提，即半干旱地区的大部分土壤侵蚀是通过沿特定流线的水蚀。如果水流和泥沙通道的连通性很高，则土壤会从田野中移出并向下坡运输并进入河道，从而导致场外问题以及农业生产力的损失。植被可以通过减少侵蚀和增加沉积来减少这种连通性。该研究结合了连通性路径和侵蚀热点的制图和分析，以及对最有效的本土植物的分析，以控制侵蚀并适合特定的景观位置和环境。关键的创新要素是对物理过程的理解与植物生态学及其空间应用的结合。该方案是在西班牙东南部欧洲地中海地区最干燥的地区通过研究开发的，并举例说明了应用策略。它特别适合于极易遭受土地退化的软岩上的旱雨农业地区。提供了关于种植或鼓励植被生长的位置以及合适物种的建议。以空间为目标的策略将植被应用于关键位置，以干预路径，而这种最小限度的干预方法仍然可以耕种田地。所提出的方法可为可持续的流域管理与土壤侵蚀和荒漠化作斗争奠定基础。

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