Long-Term Grazing Exclusion Reduces Species Diversity but Increases Community Heterogeneity in an Alpine Grassland
نویسندگان
چکیده
منابع مشابه
Short-term grazing exclusion has no impact on soil properties and nutrients of degraded alpine grassland in Tibet, China
Since the 1980s, alpine grasslands have been seriously degraded on the Tibetan Plateau. Grazing exclusion by fencing has been widely adopted to restore degraded grasslands. To clarify the effect of grazing exclusion on soil quality, we investigated soil properties and nutrients by comparing free-grazing (FG) and grazing exclusion (GE) grasslands in Tibet. Soil properties – including soil bulk d...
متن کاملSpatial heterogeneity increases diversity and stability in grassland bird communities.
Grasslands are inherently dynamic in space and time, evolving with frequent disturbance from fire and herbivores. As a consequence of human actions, many remaining grasslands have become homogenous, which has led to reduced ecosystem function, biodiversity loss, and decreased ecological services. Previous research has shown that restoring inherent heterogeneity to grasslands can increase avian ...
متن کاملIs grazing exclusion effective in restoring vegetation in degraded alpine grasslands in Tibet, China?
Overgrazing is considered one of the key disturbance factors that results in alpine grassland degradation in Tibet. Grazing exclusion by fencing has been widely used as an approach to restore degraded grasslands in Tibet since 2004. Is the grazing exclusion management strategy effective for the vegetation restoration of degraded alpine grasslands? Three alpine grassland types were selected in T...
متن کاملDivergent Changes in Plant Community Composition under 3-Decade Grazing Exclusion in Continental Steppe
An understanding of the factors controlling plant community composition will allow improved prediction of the responses of plant communities to natural and anthropogenic environmental change. Using monitoring data from 1980 to 2009, we quantified the changes in community composition in Leymus chinensis and Stipa grandis dominated grasslands in Inner Mongolia under long-term grazing-exclusion an...
متن کاملEcological Heterogeneity in the Effects of Grazing and Fire on Grassland Diversity
Grazing and fire and are major forces shaping patterns of native and exotic species diversity in many grasslands, yet both of these disturbances have notoriously variable effects. Few studies have examined how landscape-level heterogeneity in grassland characteristics, such as soil-based variation in biomass and species composition, may contribute to variation in the effects of fire or grazing....
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ژورنال
عنوان ژورنال: Frontiers in Ecology and Evolution
سال: 2020
ISSN: 2296-701X
DOI: 10.3389/fevo.2020.00066