干旱区生态环境知识资源中心(Arid): Epikarst shallow fissure soil systems are key to eliminating karst drought limitations in the karst rocky desertification area of SW China

Arid

DOI	10.1002/eco.2372
	Epikarst shallow fissure soil systems are key to eliminating karst drought limitations in the karst rocky desertification area of SW China
	Yan, Youjin; Dai, Quanhou; Yang, Yuqiong; Yan, Lingbing; Yi, Xingsong
通讯作者	Dai, QH (corresponding author), Guizhou Univ, Coll Forestry, Guiyang 550025, Peoples R China.
来源期刊	ECOHYDROLOGY
ISSN	1936-0584
EISSN	1936-0592
出版年	2021-11
英文摘要	Surface soil water shortages are among the primary factors limiting revegetation in most degraded regions with shallow soil, especially in karst areas. Finding water sources for plants is an urgent task to ensure maximum vegetation restoration in these areas. We combined soil water content monitoring and isotope tracing to reveal the principal water source supply systems for plants in karst areas. The results showed that the content and storage of water in the shallow fissure soil system (SFSS) of the epikarst zone were consistently higher and more temporally stable than that of the surface soil. Thus, epikarsts with dissolution voids and fissures are important, stable aquifers that provide water to plants. Moreover, the IsoSource results showed that the SFSS was the primary water source for three monitored tree species (Cupressus torulosa D. Don, Pyracantha fortuneana [Maxim.] Li and Rosa cymosa Tratt.), especially C. torulosa and P. fortuneana. The water-uptake patterns of C. torulosa and P. fortuneana changed from dominant SFSS and surface soil water sources during the rainy period to the dominant SFSS and transfer zone (TZ) of vadose zone water sources during the dry period. In contrast, Rhynchospora cymosa uses water from SFSS and TZ water sources only during drought. These results suggest that the SFSS is key to eliminating vegetation restoration limitations due to surface drought in karst areas. It is proposed that deeply rooted plants with dimorphic root systems are optimal for sustainable vegetation restoration in karst areas.
英文关键词	epikarst shallow fissure soil system spatial variability stable isotopes water-use strategy
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000714475800001
WOS关键词	WATER SOURCES ; STABLE-ISOTOPES ; SOUTHWESTERN CHINA ; TEMPORAL STABILITY ; HILLSLOPE SCALE ; ROOTING DEPTH ; ZONE ; RUNOFF ; TREE ; VEGETATION
WOS类目	Ecology ; Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/367710
作者单位	[Yan, Youjin; Dai, Quanhou; Yi, Xingsong] Guizhou Univ, Inst Forest Resources & Amp Environm Guizhou, Coll Forestry, Inst Soil Eros & Ecol Restorat, Guiyang, Peoples R China; [Yang, Yuqiong] Bijiang Dist Tongren City, Forestry Bur, Tongren City, Peoples R China; [Yan, Lingbing] Guizhou Univ, Collaborat Innovat Ctr Mt Ecol & AgroBioengn CICM, Minist Educ, Key Lab Plant Resource Conservat & Germplasm Inno, Guiyang, Peoples R China
推荐引用方式 GB/T 7714	Yan, Youjin,Dai, Quanhou,Yang, Yuqiong,et al. Epikarst shallow fissure soil systems are key to eliminating karst drought limitations in the karst rocky desertification area of SW China[J],2021.
APA	Yan, Youjin,Dai, Quanhou,Yang, Yuqiong,Yan, Lingbing,&Yi, Xingsong.(2021).Epikarst shallow fissure soil systems are key to eliminating karst drought limitations in the karst rocky desertification area of SW China.ECOHYDROLOGY.
MLA	Yan, Youjin,et al."Epikarst shallow fissure soil systems are key to eliminating karst drought limitations in the karst rocky desertification area of SW China".ECOHYDROLOGY (2021).