干旱区生态环境知识资源中心(Arid): 不同恢复措施对若尔盖沙化草地的恢复效果比较

Arid

	不同恢复措施对若尔盖沙化草地的恢复效果比较
其他题名	The effect of different restoration measures on the desertified alpine grassland in Zoige
	陈冬明 1; 张楠楠 1; 刘琳 2; 仲波 1; 唐中林 1; 严文超 1; 徐良英 3; 孙庚 1
来源期刊	应用与环境生物学报
ISSN	1006-687X
出版年	2016
卷号	22 期号:4 页码:573-578
中文摘要	若尔盖高原是黄河上游主要的水源补给地,也是我国重要的生态安全屏障区,但近年来由于超载过牧、气候变化、鼠害等原因出现了严重的沙化问题.通过比较分析合理放牧、围封禁牧以及自然恢复3种恢复措施对若尔盖典型沙化草地植物群落结构、生物量和土壤理化性质的恢复效果.结果显示,恢复6年后,自然恢复草地恢复效果不明显,而合理放牧草地恢复效果最好.与自然恢复和围封禁牧恢复草地相比,(1)合理放牧使得草地植物群落盖度、物种丰富度、地上生物量和地下生物量显著增加,分别为93%、9、396.41 g/m~2和693.4 g/m~2;(2)合理放牧恢复草地土壤容重、 pH显著降低;含水量、最大持水量、可溶性全氮、硝态氮、可溶性有机氮和可溶性有机碳显著增加.本研究表明合理放牧有利于沙化草地更快恢复,建议制定相关标准在适当区域进行应用和推广.
英文摘要	Zoige plateau wetland is the third-largest peat swamp wetland in China. Ecological security of Zoige plateau wetland is not only related to biomass production, but also to the ecological balance of the Yellow River Basin. In recent years, due to overgrazing and other factors, Zoige grassland has suffered serious degradation and desertification, which have decreased grassland productivity, and caused other serious ecological problems. Enclosure following reseeding is considered the most effective way to restore desertified grassland. On the other hand, some researchers and local herdsmen have found reasonable grazing after reseeding and early period enclosure more conducive to the restoration of the desertified grassland by increasing the plant community coverage, the number of species, and gross primary production. To compare the effect of these two recovery strategies, we measured the aboveground biomass, underground biomass, soil physical and chemical properties, soil microbial carbon, soil microbial nitrogen and release rate of root exudates from the root of Elymus nutans. The results showed that, after 6 years of restoration, compared with enclosure, grazing significantly increased plant community coverage (93%), species richness (9), aboveground biomass (396.41 g m~(-2)) and 0-20 cm underground biomass (693.46 g m~(-2))in the grassland. The degraded grassland with grazing showed significantly decreased soil bulk density but significantly increased soil water content, maximum moisture capacity, soil pH, total soluble nitrogen, nitrate nitrogen, dissolved organic nitrogen, and dissolved organic carbon. The results indicated that the reasonable grazing is more conducive than enclosure to the restoration of vegetation and soil physical and chemical properties of degraded grasslands.
中文关键词	若尔盖 ; 沙化草地 ; 放牧 ; 恢复
英文关键词	Zoige grassland desertification grazing restoration
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5792872
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235265
作者单位	1.中国科学院成都生物研究所, 中国科学院山地生态恢复与生物资源利用重点实验室;;生态恢复与生物多样性保育四川省重点实验室, 成都, 四川 610041, 中国; 2.四川农业大学动物科技学院草学系, 成都, 四川 611130, 中国; 3.四川省九寨沟风景名胜区管理局, 九寨沟, 623400
推荐引用方式 GB/T 7714	陈冬明,张楠楠,刘琳,等. 不同恢复措施对若尔盖沙化草地的恢复效果比较[J],2016,22(4):573-578.
APA	陈冬明.,张楠楠.,刘琳.,仲波.,唐中林.,...&孙庚.(2016).不同恢复措施对若尔盖沙化草地的恢复效果比较.应用与环境生物学报,22(4),573-578.
MLA	陈冬明,et al."不同恢复措施对若尔盖沙化草地的恢复效果比较".应用与环境生物学报 22.4(2016):573-578.