Information - GM18 The Role of Vegetation in Geomorphological Connectivity and Land Degradation
Increasingly revegetation in specific landscape configurations is used to mitigate degradation processes. For example, revegetation is being widely used to combat desertification. An understanding of the mechanisms of land degradation and of the critical soil conditions necessary for maintaining and restoring soil and land quality and ecosystem health are required to identify how and where vegetation could be used to mitigate degradation. This involves the identification of the conditions or thresholds which have to be attained or retained for vegetation growth and survival and examination of where those conditions are found. Crucially, this entails the study of linkages within the landscape at different scales to determine the key points for intervention. Vegetation may also have effects on nutrients and may increase connectivity in some circumstances. This session focuses on the flow of water and sediment through the catchment and how connectivity influences on- and off-site effects of soil erosion. Contributions that address the effects of vegetation on sediment and water flows connecting different scales from plot to catchment are welcome.
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