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基于公路水土保持的新疆植被可恢复性区划 被引量:1
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作者 叶里扎提·吾林巴斯 李宏钧 +1 位作者 刘涛 张晓峰 《公路》 北大核心 2018年第12期278-283,共6页
新疆地处我国西北边陲,生态环境脆弱,水土流失严重。为更好地落实水土保持措施中的植物措施,提高水土保持措施的防治效果,减少公路建设中对生态环境的破坏,借助GIS手段,结合影响植被生长的地貌、干燥度、土壤因素对新疆植被可恢复性进... 新疆地处我国西北边陲,生态环境脆弱,水土流失严重。为更好地落实水土保持措施中的植物措施,提高水土保持措施的防治效果,减少公路建设中对生态环境的破坏,借助GIS手段,结合影响植被生长的地貌、干燥度、土壤因素对新疆植被可恢复性进行区划,将新疆分为6个生态区和18个生态功能区,以期为植物措施的布设提供参考,便于按功能区的要求实施生态保护、建设与管理。 展开更多
关键词 植被可恢复性 新疆 区划
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岩溶化山地土地退化的等级划分与植被恢复初步研究——以湘西洛塔河流域坡耕地为例 被引量:18
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作者 周游游 霍建光 刘德深 《中国岩溶》 CAS CSCD 2000年第3期268-274,共7页
通过专题研究及抽样调查 ,对岩溶化山地的资源环境及景观特征、土地退化原因和程度的划分、植被可恢复性及其土地持续利用等问题进行研究。
关键词 岩溶化山地 土地退化 植被可恢复性 等级划分
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Spatial variability and long-term change in pollen diversity in Nam Co catchment(central Tibetan Plateau): Implications for alpine vegetation restoration from a paleoecological perspective 被引量:5
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作者 LI Quan 《Science China Earth Sciences》 SCIE EI CAS CSCD 2018年第3期270-284,共15页
Pollen diversity offers abundant clues into the floristic diversity and history of vegetation change. Few palynological studies investigated modem pollen diversity or the past floristic diversity on the Tibetan Plate... Pollen diversity offers abundant clues into the floristic diversity and history of vegetation change. Few palynological studies investigated modem pollen diversity or the past floristic diversity on the Tibetan Plateau (TP). Based on modem pollen assemblages from 37 topsoils and 63 surface lake sediments in the Nam Co catchment on the central TP, this study quantitatively explored spatial distribution of modem pollen diversity using Shannon-Wiener index (H) and palynological richness (E(Tn), n=600). Pollen diversity indices showed spatial variability among vegetation types, reflecting the differences in terrestrial floristic diversity in the lake catchment. Their values were high in the southeastern region of the lake catchment which is covered by alpine steppe, while values were low for alpine meadow and marsh meadow. The pollen diversity in lacustrine pollen assemblage could be an effective proxy to document past floristic diversity. The past floristic diversity in the lake catchment, recovered from a fossil pollen record ofNMLC-1, showed a long-term change of ascending overlaid by several rapid diversity changes during the last 8400 years due to the downward shift of altitudinal vegetation belt driven by a general climatic cooling. The results imply that under the environmental challenge of climate warming and vegetation degradation, alpine vegetation restoration in the Nam Co catchment and the central TP should pay attention to altitudinal vegetation belt and zonal vegetation of alpine steppe, and use the long-term change of floristic diversity as a historical analogue. 展开更多
关键词 Pollen diversity Palynological richness Vegetation restoration Nam Co Lake Tibetan Plateau
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