干旱区生态环境知识资源中心(Arid): 黄土高原半干旱区苜蓿草地撂荒过程生态功能的权衡分析

Arid

	黄土高原半干旱区苜蓿草地撂荒过程生态功能的权衡分析
其他题名	Trade-offs among ecological functions during alfalfa grassland restoration in a semi-arid region of the Loess Plateau
	郭茹茹; 杨磊; 李宗善; 卫伟; 张钦弟
来源期刊	草业科学
ISSN	1001-0629
出版年	2020
卷号	37 期号:9 页码:1698-1709
中文摘要	探讨黄土高原撂荒过程中不同生态系统功能之间的关系,可为植被恢复和重建提供科学依据。本研究以半干旱黄土小流域苜蓿(Medicago sativa)地撂荒不同演替阶段的草地群落为研究对象,基于野外调查和采样分析,采用均方根偏差法分析撂荒过程中物种多样性、地上碳储量、土壤水储量、土壤有机碳储量和土壤全氮储量5种生态系统功能的权衡关系。结果表明:随着群落的演替,物种多样性、地上碳储量、土壤水储量、土壤有机碳储量和土壤全氮储量的相对收益在不同阶段均存在显著差异(P < 0.05)。苜蓿群落中地上碳储量、有机碳储量和全氮储量的相对收益较高,说明维持碳氮储量增加是以降低物种多样性和消耗土壤水储量为代价;所有的生态系统功能中,土壤有机碳储量和土壤全氮之间的权衡最小,表明二者存在协同关系,整个恢复阶段的平均值为0.13;群落演替至赖草(Leymus secalinus)群落阶段,5个生态功能之间的权衡最均衡,其RMSD均值仅0.21,至长芒草(Stipa bungeana)群落阶段,物种多样性最高。研究结果揭示了植被恢复草地自然演替过程中主要生态系统功能之间的权衡和协同关系,可为区域植被恢复可持续性维持提供科学依据。
英文摘要	To establish a scientific basis for vegetation restoration and reconstruction of alfalfa grasslands on the Loess Plateau, it is necessary to study the effects of different ecosystem functions on habitat reclamation. Accordingly, the aim of the present study analyzed different succession stages of alfalfa land in a semi-arid loess watershed, and the root mean square deviation (RMSD) method was used to analyze species diversity, aboveground carbon storage, soil moisture storage, and trade-offs between the five ecosystem functions of soil organic carbon storage and soil total nitrogen storage. The relativereturns of species diversity, aboveground carbon storage, soil water storage, soil organic carbon storage, and soil total nitrogen storage changed significantly with the community succession (P < 0.05), and the relative yields of aboveground carbon storage, soil organic carbon, and soil total nitrogen increased with succession, whereas species diversity and soil moisture consumption were reduced. All ecosystem functions were centered between soil organic carbon storage and soil total nitrogen storage, and the trade-off between these factors was minimal, which indicated that the factors were synergisticand that the whole recovery stage value was 0.13. Upon restoration to the Leymus secalinus community stage, the trade balance between the five ecological functions was the most balanced, with an average RMSD of only 0.21, and species diversity was highest at the long-shoulder grass community stage. The present study establishes a scientific evaluation system and theoretical guidance for the sustainable restoration of farmland to native habitat.
中文关键词	撂荒演替 ; 生态功能 ; 权衡分析 ; 草地群落 ; 黄土高原
英文关键词	secondary succession ecological function trade-off analysis grassland community Loess Plateau
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6830103
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353342
作者单位	郭茹茹, 山西师范大学生命科学学院, 临汾, 山西 041004, 中国. 张钦弟, 山西师范大学生命科学学院, 临汾, 山西 041004, 中国. 杨磊, 中国科学院生态环境研究中心, 城市与区域生态国家重点实验室, 北京 100085, 中国. 李宗善, 中国科学院生态环境研究中心, 城市与区域生态国家重点实验室, 北京 100085, 中国. 卫伟, 中国科学院生态环境研究中心, 城市与区域生态国家重点实验室, 北京 100085, 中国.
推荐引用方式 GB/T 7714	郭茹茹,杨磊,李宗善,等. 黄土高原半干旱区苜蓿草地撂荒过程生态功能的权衡分析[J],2020,37(9):1698-1709.
APA	郭茹茹,杨磊,李宗善,卫伟,&张钦弟.(2020).黄土高原半干旱区苜蓿草地撂荒过程生态功能的权衡分析.草业科学,37(9),1698-1709.
MLA	郭茹茹,et al."黄土高原半干旱区苜蓿草地撂荒过程生态功能的权衡分析".草业科学 37.9(2020):1698-1709.