Spatial pattern of plant species diversity and the influencing factors in a Gobi Desert within the Heihe River Basin, Northwest China
Zhang, PP; Shao, MA; Zhang, XC
2017
Source PublicationJOURNAL OF ARID LAND
ISSN1674-6767
Volume9Issue:3Pages:379-393
AbstractUnderstanding the spatial pattern of plant species diversity and the influencing factors has important implications for the conservation and management of ecosystem biodiversity. The transitional zone between biomes in desert ecosystems, however, has received little attention in that regard. In this study, we conducted a quantitative field survey (including 187 sampling plots) in a 40-km(2) study area to determine the spatial pattern of plant species diversity and analyze the influencing factors in a Gobi Desert within the Heihe River Basin, Northwest China. A total of 42 plant species belonging to 16 families and 39 genera were recorded. Shrub and semi-shrub species generally represented the major part of the plant communities (covering 90% of the land surface), while annual and perennial herbaceous species occupied a large proportion of the total recorded species (71%). Patrick richness index (R), Shannon-Wiener diversity index (H'), Simpson's dominance index (D), and Pielou's evenness index (J) were all moderately spatially variable, and the variability increased with increasing sampling area. The semivariograms for R and H' were best fitted with Gaussian models while the semivariograms for D and J were best fitted with exponential models. Nugget-to-still ratios indicated a moderate spatial autocorrelation for R, H', and D while a strong spatial autocorrelation was observed for J. The spatial patterns of R and H' were closely related to the geographic location within the study area, with lower values near the oasis and higher values near the mountains. However, there was an opposite trend for D. R, H', and D were significantly correlated with elevation, soil texture, bulk density, saturated hydraulic conductivity, and total porosity (P < 0.05). Generally speaking, locations at higher elevations tended to have higher species richness and diversity and the higher elevations were characterized by higher values in sand and gravel contents, bulk density, and saturated hydraulic conductivity and also by lower values in total porosity. Furthermore, spatial variability of plant species diversity was dependent on the sampling area.
SubtypeJournal
Keywordspecies diversity spatial heterogeneity environmental factors Gobi Desert transitional zone
Subject AreaEnvironmental Sciences & Ecology
WOS Subject ExtendedEnvironmental Sciences
WOS KeywordSOIL PROPERTIES ; ENVIRONMENTAL HETEROGENEITY ; OPTIMAL INTERPOLATION ; ELEVATION GRADIENTS ; VEGETATION PATTERNS ; NEW-ZEALAND ; SCALE ; RICHNESS ; FOREST ; COMMUNITIES
Indexed BySCI
Language英语
WOS IDWOS:000401445300006
PublisherSPRINGER HEIDELBERG
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44060
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Zhang, PP,Shao, MA,Zhang, XC. Spatial pattern of plant species diversity and the influencing factors in a Gobi Desert within the Heihe River Basin, Northwest China[J]. JOURNAL OF ARID LAND,2017,9(3):379-393.
APA Zhang, PP,Shao, MA,&Zhang, XC.(2017).Spatial pattern of plant species diversity and the influencing factors in a Gobi Desert within the Heihe River Basin, Northwest China.JOURNAL OF ARID LAND,9(3),379-393.
MLA Zhang, PP,et al."Spatial pattern of plant species diversity and the influencing factors in a Gobi Desert within the Heihe River Basin, Northwest China".JOURNAL OF ARID LAND 9.3(2017):379-393.
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