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Towards more meaningful scenarios of biodiversity responses to land-use change in Central Asia

机译:迈向中亚土地利用变化的更有意义的生物多样性情景

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摘要

We here respond to Nunez et al. (Reg Environ Chang 20:39, 2020), recently published inRegional Environmental Change. Nunez et al. project biodiversity responses to land-use and climate change in Central Asia. Their projections are based on scenarios of changing socio-economic and environmental conditions for the years 2040, 2070, and 2100. We suggest that the predicted magnitude of biodiversity loss might be biased high, due to four shortfalls in the data used and the methods employed. These are (i) the use of an inadequate measure of "biodiversity intactness," (ii) a failure to acknowledge for large spatial variation in land-use trends across the five considered Central Asian countries, (iii) the assumption of a strictly linear, negative relationship between livestock grazing intensity and the abundance of animals and plants, and (iv) the extrapolation of grazing-related biodiversity responses into areas of cropland. We conclude that future scenarios of biodiversity response to regional environmental change in Central Asia will benefit from using regional, not global, spatial data on livestock distribution and land-use patterns. The use of extra-regional data on the relationships between biodiversity and land-use or climate should be avoided.
机译:我们在这里回应Nunez等人。 (Reg Environ Chang 20:39,2020),最近发表了导入的环境变化。 Nunez等人。项目生物多样性对中亚土地利用和气候变化的反应。他们的预测基于2040,2070,2100不断变化的社会经济和环境条件的情况。我们建议,由于所使用的数据和所用方法的缺陷以及所用方法,因此,生物多样性损失的预测幅度可能会很高。这些是(i)使用不充分的“生物多样性鸿沟”的衡量标准(ii)未能承认五个被认为是中亚国家的土地利用趋势的大量空间变化,(iii)假设是严格的线性的假设,牲畜放牧强度与动物和植物丰度之间的负面关系,(iv)将放牧相关的生物多样性反应推断为农田地区。我们得出结论,未来的生物多样性对中亚区域环境变化的影响将受益于利用区域,而不是全球空间数据对畜牧业分销和土地使用模式。应避免使用关于生物多样性和土地利用或气候之间的关系的额外区域数据。

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