气候变化领域集成服务门户(CCPortal): Scale effects on spatial heterogeneity of herbaceous vegetation in desert steppe depend on plant community type

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DOI	10.1016/j.ecolind.2021.107769
	Scale effects on spatial heterogeneity of herbaceous vegetation in desert steppe depend on plant community type
	Zuo, Xiaoan; Mao, Wei; Qu, Hao; Chen, Min; Zhao, Shenglong; Liu, Lianxu; Wang, Shaokun; Yue, Ping; Ma, Xujun; Zhao, Xueyong; Medina-Roldan, Eduardo; Allington, Ginger R. H.
通讯作者	Zuo, XA (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Urat Desert Grassland Res Stn, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	1470-160X
EISSN	1872-7034
卷号	127
英文摘要	Spatial heterogeneity plays a crucial role in affecting the ecologial processes in natural ecosystems, yet how spatial heterogeneity of herbaceous vegetation in desert-grassland transitional zone varies with increased spatial scale are still poorly known. We measured plant height, density, species richness and aboveground plant biomass (AGB) at the small (0.25 x 0.5 km), medium (0.5 x 0.5 km) and large (0.5 x 1 km) spatial scales in two adjacent plant communities (shrub- and grass-dominated) in desert steppe, Inner Mongolia. We used the geostatistical methods to examine the magnitude and degree of spatial heterogeneity of herbaceous vegetation characteristics with the increasing scale in both two plant communities. We found that compared to grass-dominated community, shrub-dominated community had the lower plant height and density at the large scale, the higher AGB at the small or medium scale, and the lower species richness at all three scales. Plant height, density and AGB in grass-dominated community were higher at the large scale than at the small scale, but they did not differ across three scales in shrub-dominated community. Species richness in both two communities were higher at the small scale than at the medium or large scale. All vegetation characteristics at three scales had the higher spatial heterogeneity in shrub- than in grass-dominated community. Spatial heterogeneity of all vegetation characteristics in shrub-dominated community decreased from the small to the large scale, while their spatial heterogeneity of plant height, density and species richness in grass-dominated community increased with the increasing scale. Our study highlights that shrub encroachment can simplify community composition and amplify spatial heterogeneity of herbaceous vegetation at multiple scales. Scale effects on spatial heterogeneity of herbaceous vegetation in desert steppe are dependent on plant community dominated by shrub or grass.
关键词	AREAL UNIT PROBLEM SHRUB-ENCROACHMENT SPECIES RICHNESS RETAMA-SPHAEROCARPA LAND-USE SOIL RESPIRATION INNER-MONGOLIA SANDY LAND GRASSLANDS CARBON
英文关键词	Conceptual model; Geostatistical analysis; Grassland; Multiple spatial-scale; Shrub community; Spatial dependence
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS记录号	WOS:000659186200002
来源期刊	ECOLOGICAL INDICATORS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254336
作者单位	[Zuo, Xiaoan; Mao, Wei; Qu, Hao; Chen, Min; Zhao, Shenglong; Liu, Lianxu; Wang, Shaokun; Yue, Ping; Ma, Xujun; Zhao, Xueyong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Urat Desert Grassland Res Stn, Lanzhou 730000, Peoples R China; [Zuo, Xiaoan] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Naiman Desertificat Res Stn, Lanzhou 730000, Peoples R China; [Zuo, Xiaoan] Key Lab Stress Physiol & Ecol Cold & Arid Reg, Lanzhou 730000, Gansu, Peoples R China; [Medina-Roldan, Eduardo] Xian Jiaotong Liverpool Univ, Dept Hlth & Environm Sci, Suzhou 215000, Peoples R China; [Allington, Ginger R. H.] George Washington Univ, Dept Geog, Washington, DC USA
推荐引用方式 GB/T 7714	Zuo, Xiaoan,Mao, Wei,Qu, Hao,et al. Scale effects on spatial heterogeneity of herbaceous vegetation in desert steppe depend on plant community type[J]. 中国科学院西北生态环境资源研究院,2021,127.
APA	Zuo, Xiaoan.,Mao, Wei.,Qu, Hao.,Chen, Min.,Zhao, Shenglong.,...&Allington, Ginger R. H..(2021).Scale effects on spatial heterogeneity of herbaceous vegetation in desert steppe depend on plant community type.ECOLOGICAL INDICATORS,127.
MLA	Zuo, Xiaoan,et al."Scale effects on spatial heterogeneity of herbaceous vegetation in desert steppe depend on plant community type".ECOLOGICAL INDICATORS 127(2021).