Species Composition, Richness and Aboveground Biomass of Natural Grassland in Hilly-Gully Regions of the Loess Plateau, China

doi:10.1016/S2095-3119(13)60590-0

Journal of Integrative Agriculture ›› 2014, Vol. 13 ›› Issue (11): 2527-2536.DOI: 10.1016/S2095-3119(13)60590-0

Species Composition, Richness and Aboveground Biomass of Natural Grassland in Hilly-Gully Regions of the Loess Plateau, China

DENG Lei , SHANGGUAN, Zhou-ping

State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, P.R.China

收稿日期:2013-03-28 出版日期:2014-11-06 发布日期:2014-11-14
通讯作者: SHANGGUAN Zhou-ping, Tel: +86-29-87019107, Fax: +86-29-87012210, E-mail: shangguan@ms.iswc.ac.cn
作者简介:DENG Lei, Mobile: 15289383034, E-mail: denglei011124@163.com
基金资助:
This study was funded by the Strategic Priority Research Program of the Chinese Academy of Sciences, China (XDA05050403).

Species Composition, Richness and Aboveground Biomass of Natural Grassland in Hilly-Gully Regions of the Loess Plateau, China

DENG Lei , SHANGGUAN, Zhou-ping

State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, P.R.China

Received:2013-03-28 Online:2014-11-06 Published:2014-11-14
Contact: SHANGGUAN Zhou-ping, Tel: +86-29-87019107, Fax: +86-29-87012210, E-mail: shangguan@ms.iswc.ac.cn
About author:DENG Lei, Mobile: 15289383034, E-mail: denglei011124@163.com
Supported by:
This study was funded by the Strategic Priority Research Program of the Chinese Academy of Sciences, China (XDA05050403).

摘要/Abstract

摘要： In order to study the characteristics of species composition, richness and aboveground biomass of natural grasslands, and then find out the relations between species richness and aboveground productivity of the communities and possible mechanisms to form the relations, four typical grassland communities (Artemisia capillaries (AC), Thymus quinquecostatus (TQ), Stipa bungeana (SB) and Stipa grandis (SG)) along with a succession sequence in hilly-gully regions of the Loess Plateau, China, were investigated by field survey and laboratory analysis. The results were summarized as follows: Different succession stages had different species compositions as well as different proportions of plant life forms and photosynthetic types, and Asteraceae, Poaceae and Leguminosae were their dominant species as well as their dominant perennial herb species; and different succession stages had significantly different species richness and aboveground biomasses. There were many relation patterns (linear positive correlation, unrelated relations and unimodal relations) between the species richness and aboveground biomass in different succession stages and a significant unimodal relation between the species richness and aboveground biomass in all the grassland communities and the highest species diversity appeared at a moderate level of productivity. The results suggest the unimodal relations in all the grassland communities are accumulative results of the relations in each succession stage.

关键词: life forms , photosynthetic types , productivity , species diversity

Abstract: In order to study the characteristics of species composition, richness and aboveground biomass of natural grasslands, and then find out the relations between species richness and aboveground productivity of the communities and possible mechanisms to form the relations, four typical grassland communities (Artemisia capillaries (AC), Thymus quinquecostatus (TQ), Stipa bungeana (SB) and Stipa grandis (SG)) along with a succession sequence in hilly-gully regions of the Loess Plateau, China, were investigated by field survey and laboratory analysis. The results were summarized as follows: Different succession stages had different species compositions as well as different proportions of plant life forms and photosynthetic types, and Asteraceae, Poaceae and Leguminosae were their dominant species as well as their dominant perennial herb species; and different succession stages had significantly different species richness and aboveground biomasses. There were many relation patterns (linear positive correlation, unrelated relations and unimodal relations) between the species richness and aboveground biomass in different succession stages and a significant unimodal relation between the species richness and aboveground biomass in all the grassland communities and the highest species diversity appeared at a moderate level of productivity. The results suggest the unimodal relations in all the grassland communities are accumulative results of the relations in each succession stage.

Key words: life forms , photosynthetic types , productivity , species diversity

DENG Lei , SHANGGUAN, Zhou-ping. Species Composition, Richness and Aboveground Biomass of Natural Grassland in Hilly-Gully Regions of the Loess Plateau, China[J]. Journal of Integrative Agriculture, 2014, 13(11): 2527-2536.

DENG Lei , SHANGGUAN , Zhou-ping . Species Composition, Richness and Aboveground Biomass of Natural Grassland in Hilly-Gully Regions of the Loess Plateau, China[J]. Journal of Integrative Agriculture, 2014, 13(11): 2527-2536.

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Species Composition, Richness and Aboveground Biomass of Natural Grassland in Hilly-Gully Regions of the Loess Plateau, China

Species Composition, Richness and Aboveground Biomass of Natural Grassland in Hilly-Gully Regions of the Loess Plateau, China

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