干旱区生态环境知识资源中心(Arid): Stoichiometric characteristics of ecological-economic forests in karst rocky desertification areas of southern China

Arid

	Stoichiometric characteristics of ecological-economic forests in karst rocky desertification areas of southern China
	Zhang, Yu; Xiong, Kangning; Qin, Yao; Yu, Yanghua; Li, Tingling
通讯作者	Xiong, Kangning
来源期刊	AUSTRIAN JOURNAL OF FOREST SCIENCE
ISSN	0379-5292
EISSN	0375-524X
出版年	2020
卷号	137 期号:2 页码:109-131
英文摘要	Investigating the eco-stoichiometric characteristics of carbon (C), nitrogen (N), and phosphorus (P) in plants, leaf litter, and soil of revegetated forests in areas of karst rocky desertification can improve our understanding of nutrient cycling and stability of karst ecosystems. In this paper, we selected five forest types typical for South China karst regions to study the stoichiometry of C, N, and P, and their internal correlation with the plant leaf-litter-soil continuum. The five forest types were Chinese weeping cypress (Cupressus funebris Endl.) mixed with Eucalyptus (Eucalyptus robusta Smith), loquat (Eriobotrya japonica (Thunb.) Lindl.), Chinese prickly ash (Zanthoxylum bungeanum Maxim.), walnut (Juglans regia Linn.), and teak (Tectona grandis Linn. f). The average C, N, and P contents in the leaves of the five species were 481.66, 14.68, and 2.23 mg g(-1), respectively; in leaf litter 434.52, 9.22, and 1.70 mg g(-1), and in soil 36.74, 2.85, and 0.64 mg g(-1). The vegetation of the eco-economic forest in the karst area was low in N, rich in P, and had a relatively high C storage. The order of C:N ratios was leaf litter > plant leaf > soil for all forests, except for the teak forest. No statistically significant difference was observed in soil C: N (P>0.05). N and P content in plant leaves was significantly positively correlated with that in leaf litter (P<0.05), although the reabsorption rate of N and P was relatively low. The reabsorption rate may not be an important adaptation mechanism to plant nutrient limitation, but appears to be an intrinsic characteristic of the studied species. Productivity was not correlated with C, N, or P in plant, litter, and soil and was probably influenced by other factors than nutrient supply. The grade of rocky desertification strongly affected the C storage. For our study region we estimated a potential C sequestration in litter alone of 3748 t C (in decreasing order, the potential, mild, moderate, and severe rock desertification areas contributed 1220.40 t, 1566.87 t, 556.60 t, and 403.59 t). This study contributes to our understanding of nutrient uptake and utilization of nutrients by tree species in karst areas and provide a theoretical basis for vegetation restoration and reconstruction to control karst rocky desertification.
英文关键词	karst plantations afforestation biogeochemistry litter soil Eucalyptus robusta Cupressus funebris Eriobotrya japonica Zanthoxylum bungeanum Juglans regia
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000543799400003
WOS关键词	SOIL ORGANIC-CARBON ; N-P STOICHIOMETRY ; PHOSPHORUS STOICHIOMETRY ; INNER-MONGOLIA ; LEAF NITROGEN ; PLANT ; TERRESTRIAL ; LITTER ; REGION ; NUTRIENTS
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319437
作者单位	Guizhou Normal Univ, Sch Karst Sci, State Engn Technol Inst Karst Desertificat Contro, Guiyang 550001, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yu,Xiong, Kangning,Qin, Yao,et al. Stoichiometric characteristics of ecological-economic forests in karst rocky desertification areas of southern China[J],2020,137(2):109-131.
APA	Zhang, Yu,Xiong, Kangning,Qin, Yao,Yu, Yanghua,&Li, Tingling.(2020).Stoichiometric characteristics of ecological-economic forests in karst rocky desertification areas of southern China.AUSTRIAN JOURNAL OF FOREST SCIENCE,137(2),109-131.
MLA	Zhang, Yu,et al."Stoichiometric characteristics of ecological-economic forests in karst rocky desertification areas of southern China".AUSTRIAN JOURNAL OF FOREST SCIENCE 137.2(2020):109-131.