干旱区生态环境知识资源中心(Arid): Plant morphological and functional characteristics combined with elevation and aspect influence phytogenic mound parameters in a dry-hot valley

Arid

DOI	10.2489/jswc.2021.00031
	Plant morphological and functional characteristics combined with elevation and aspect influence phytogenic mound parameters in a dry-hot valley
	Li, J.; Liu, Y.; Wu, J.; He, J.; Cui, Y.; Luo, Q.; Wang, D.; Pedersen, L.; Lin, Y.
通讯作者	Li, J (corresponding author), Fujian Agr & Forestry Univ, Key Lab Forest Ecosyst Proc & Management Fujian P, Forestry Coll, Fuzhou, Peoples R China. ; Li, J (corresponding author), Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu, Peoples R China.
来源期刊	JOURNAL OF SOIL AND WATER CONSERVATION
ISSN	0022-4561
EISSN	1941-3300
出版年	2021
卷号	76 期号:2 页码:142-152
英文摘要	Isolated plants growing on steep slopes with erodible bedrock are usually associated with the formation of phytogenic mounds in semiarid and arid ecosystems. Identifying the plant characteristics that affect phytogenic mounds and predicting a plant community's potential for erosion control are of great interest to workers seeking to improve the management of degraded ecosystems. We studied the phytogenic mounds of three dominant perennial grass species found between 1,400 and 1,700 m above sea level in Jiangjiagou Gully: Heteropogon conforms, Eulaliopsis hinata, and Eriophorum comosum. Morphological and functional characteristics were measured for a total of 42 individuals from the three grass species on both sunny and shady slope aspects. Soil samples were collected from the mounds and from bare land 30 cm upslope from each mound to determine particle size distribution. Morphological and functional characteristics, as well as mound parameters, were summarized using principal component analysis (PCA). Pearson's correlation analysis, linear regression analysis, and redundancy analysis were conducted to identify the relationships between plant characteristics and mound parameters. Then we used analysis of covariance to examine the combined effects of aspect and elevation and plant characteristics on mound parameters.We found that there are no differences in morphological characteristics, functional characteristics, or mound parameters between the three grass species, or soil particle size distribution between mounds and bare land. PCA shows that mound parameters are best correlated (positively) with interception length and total dry weight. Crown length in the direction of the slope and root width are also positively correlated with maximum height and maximum width but to a lesser extent. Plant morphological and functional characteristics can explain greater than 60% of the variance of all mound parameters except maximum length, with the greatest contributions from crown length and interception length. Aspect and elevation, combined with some plant characteristics, also affected mound parameters. Our study indicates that perennial grass species can accumulate sediment deposits during growth in a dry-hot valley. Our results provide useful information for evaluating the function of plants in erosion control and for identifying ways to improve the effectiveness of species in mound formation in dry-hot valley ecosystems.
英文关键词	functional characteristics morphological characteristics phytogenic mound sediment deposition soil erosion
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000627425600007
WOS关键词	SEDIMENT RETENTION ; VEGETATION SUCCESSION ; SOIL-EROSION ; RUNOFF ; TRAITS ; ROOTS ; WATER ; ARCHITECTURE ; NUTRIENTS ; BARRIERS
WOS类目	Ecology ; Soil Science ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/367830
作者单位	[Li, J.; Lin, Y.] Fujian Agr & Forestry Univ, Key Lab Forest Ecosyst Proc & Management Fujian P, Forestry Coll, Fuzhou, Peoples R China; [Li, J.; Liu, Y.; Wu, J.; He, J.; Cui, Y.; Luo, Q.; Lin, Y.] Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu, Peoples R China; [Liu, Y.; Wu, J.; He, J.; Cui, Y.; Luo, Q.] Fujian Agr & Forestry Univ, Forestry Coll, Fuzhou, Peoples R China; [Wang, D.] Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Peoples R China; [Pedersen, L.] Green Valley Gardens Nursery & Arboretum, Walla Walla, WA USA
推荐引用方式 GB/T 7714	Li, J.,Liu, Y.,Wu, J.,et al. Plant morphological and functional characteristics combined with elevation and aspect influence phytogenic mound parameters in a dry-hot valley[J],2021,76(2):142-152.
APA	Li, J..,Liu, Y..,Wu, J..,He, J..,Cui, Y..,...&Lin, Y..(2021).Plant morphological and functional characteristics combined with elevation and aspect influence phytogenic mound parameters in a dry-hot valley.JOURNAL OF SOIL AND WATER CONSERVATION,76(2),142-152.
MLA	Li, J.,et al."Plant morphological and functional characteristics combined with elevation and aspect influence phytogenic mound parameters in a dry-hot valley".JOURNAL OF SOIL AND WATER CONSERVATION 76.2(2021):142-152.