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1)  degraded grassland vegetation
退化草地植被
2)  wetland vegetation degradation
湿地植被退化
1.
Based on the remote sensing and geographic information system,the land use/cover change process of the northeast of Sanjiang Plain and its effect on the wetland vegetation degradation of Honghe Nature Reserve were analyzed.
保护区已有759hm2的草甸和沼泽被林地入侵,湿地植被退化趋势明显。
3)  degeneration of vegetation
草被退化
4)  vegetation degradation
植被退化
1.
Effects of over-grazing on vegetation degradation of Kobresia pygmaea meadow in Nagqu, Tibet;
超载放牧对那曲地区高山嵩草草甸植被退化的影响
2.
Research on spatial pattern of human-induced vegetation degradation and restoration:a case study of Shaanxi Province
人类活动对植被退化/恢复影响的空间格局——以陕西省为例
3.
After study on vegetative structure and composition, propagule and soil of 25 vegetative ecosystems at three villages and one natural reserve in karst upland in Eastern Yunnan, we found that vegetation degradation was a gradual, anti-successional process in which species composition and propagule bank were determined by t.
植被退化是生态系统退化的最典型外在特征。
5)  vegetation degeneration
植被退化
6)  degraded vegetation
退化植被
1.
The degraded vegetation around Tiantong contains five types of communities,such as earlier degraded community of EBLF,deciduous broad-leaved forest community,coniferous and broad-leaved mixed forest community,conifer forest community and shrub community.
通过对退化植被各群落类型的区系分析,得出了天童地区常绿阔叶林退化群落的区系组成特征,具体如下:(1)天童及周边地区退化植被的植物区系包括72科138属204种,其物种多样性低于常绿阔叶林的成熟群落;(2)本植物区系地理成分与常绿阔叶林成熟群落一致,表现了明显的亚热带植物区系性质,是热带向温带的过渡;(3)人类的干扰导致了各退化群落中国特有成分的下降;(4)各退化群落类型与常绿阔叶林成熟群落保持了较高水平的科、属和种的相似性。
补充资料:退化
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性质:(一)即衰退。生物物种因发生变异而使原有遗传性状发生对其自身生存或(和)对人类实践应用带来不利影响的改变,例如工业发酵菌种(株)生产能力的下降,植物病原菌寄生能力的下降,以及有关菌种其他形态、生理、遗传、生态等性状的非典型化改变等。(二)历经每次复制后,与最初的或前次的图像相比较,其图像质量的变化。这种退化是以分辨率、边缘锐度、图形尺寸的变化和缺陷密度来度量的。一般可以预示这种退化因每次复制而加剧。

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