摘要
天然草地不仅是畜牧业生产的重要物质基础,而且是全球生态系统的重要组成部分和绿色生态屏障。我国草地主要分布在半湿润、半干旱和干旱的北部和西部地区的蒙新高原和青藏高原,在我国甘肃地区也分着大面积的天然草地。由于长期超载过牧、乱垦、乱挖、鼠虫危害,加之近几年来全球性气候变干、变暖,使其草地生态系统趋于逆向演替,有一半以上已经退化,其中1/4严重退化,草原面积不断萎缩,草地产草量不断下降,天然草原生态功能和生产力整体下降的局面尚未得到改善。对此,本文以甘肃省天祝为研究对象,对其天然草地的生产力及植被的组成进行研究,以期为甘肃天然草地的生态的保护措施提供参考。
The natural meadow is not only the important material basis of animal husbandry, but also the essential constituent part of the global ecological system and green ecological barrier. Our country＇s meadow is mainly distributed in the north of semi-humid, semi-arid and dry regions and the NeimengguXinjiang plateau and Qinghai-Tibet plateau of the west. Large tracts of meadow are distributed in Gansu region of our country. Because of long-term overloaded overgrazing, improper reclamation, excessive digging and rodent-insect harms, along with global climate change in recent years, the meadow ecosystem in Gansu tends to reverse succession. More than half of the meadow has degenerated, a quarter of which has degenerated seriously. Grassland area is continually shrinking, and yield of grass is continually declining. The situation that the ecological functions and productivity of natural grassland are overall declining has not been improved yet. For this reason, the article selects Tianzhu of Gansu province as the research object and study the productivity and constitution of vegetation of natural meadow in order to provide reference for ecological safeguard procedures of natural meadow in Gansu province.
出处
《中国牛业科学》
2017年第1期47-49,56,共4页
China Cattle Science
关键词
甘肃
天然草地
生产力
植被组成
Gansu
natural meadow
productivity
vegetation composition
