干旱区生态环境知识资源中心(Arid): Seasonal Differences in Water-Use Sources of Impatiens hainanensis (Balsaminaceae), a Limestone-Endemic Plant Based on Fissure-Soil Habitat Function

Arid

DOI	10.3390/su13168721
	Seasonal Differences in Water-Use Sources of Impatiens hainanensis (Balsaminaceae), a Limestone-Endemic Plant Based on Fissure-Soil Habitat Function
	Huang, Weixia; Zhong, Yunfang; Song, Xiqiang; Zhang, Cuili; Ren, Mingxun; Du, Yanjun
通讯作者	Song, XQ (corresponding author), Hainan Univ, Minist Educ, Key Lab Genet & Germplasm Innovat Trop Special Fo, Haikou 570228, Hainan, Peoples R China. ; Song, XQ (corresponding author), Hainan Univ, Coll Forestry, Haikou 570228, Hainan, Peoples R China.
来源期刊	SUSTAINABILITY
EISSN	2071-1050
出版年	2021
卷号	13 期号:16
英文摘要	The southwestern mountains of Hainan Island are the southernmost region with tropical karst landform in China. The frequent alternation of dry and wet seasons leads to the loss of the mineral nutrients of limestone, creating karst fissure habitats. Plants living in karst fissure habitats for long periods of time have developed local adaptation mechanisms correspondingly. In the paper, hydrogen-oxygen stable isotope technology was applied to determine the water-use sources of Impatiens hainanensis in the dry and wet seasons, hoping to expound the adaptation mechanism of I. hainanensis in karst fissure habitats to the moisture dynamics in the wet and dry seasons. In the wet season (May to October, 2018), the air humidity is relatively high in the I. hainanensis habitat; in the dry season (November 2018 to April 2019), there is a degree of evaporation. In the wet season, fine-root biomass increases with soil depths, while coarse-root biomass decreases with soil depths; in the dry season, fine-root biomass is lower and coarse-root biomass is higher compared with the wet season. It was found that the average rainfall reached 1523 mm and the main water-use sources were shallow (0-5 cm) and middle (5-10 cm) soil water, epikarst water, and shallow karst fissure water during the wet season; the average rainfall reached 528 mm, and the deep (10-15 cm) soil water and shallow karst fissure water were the main water-use sources during the dry season. Fog water has a partial complementary effect in the dry season. The differences in the distribution of root biomass and each source of water in the wet and dry seasons of I. hainanensis also reflect the different water-use strategies of I. hainanensis in the wet and dry seasons. In both dry and wet seasons, I. hainanensis formed a water-use pattern dominated by soil water and shallow fissure water (0-15 cm) under the influence of the fissure-soil-plant system in the karst region.
英文关键词	Impatiens hainanensis karst shallow fissures hydrogen-oxygen stabilized isotopes water utilization
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000690266900001
WOS关键词	CARBON-ISOTOPE DISCRIMINATION ; KARST ROCKY DESERTIFICATION ; STABLE-ISOTOPE ; SUMMER PRECIPITATION ; WOODY-PLANTS ; RAIN-FOREST ; DROUGHT ; EVOLUTION ; MOISTURE ; TREES
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364751
作者单位	[Huang, Weixia; Zhong, Yunfang; Song, Xiqiang; Zhang, Cuili; Ren, Mingxun; Du, Yanjun] Hainan Univ, Minist Educ, Key Lab Genet & Germplasm Innovat Trop Special Fo, Haikou 570228, Hainan, Peoples R China; [Huang, Weixia] Hainan Univ, Coll Life & Pharmaceut Sci, Haikou 570228, Hainan, Peoples R China; [Song, Xiqiang; Du, Yanjun] Hainan Univ, Coll Forestry, Haikou 570228, Hainan, Peoples R China
推荐引用方式 GB/T 7714	Huang, Weixia,Zhong, Yunfang,Song, Xiqiang,et al. Seasonal Differences in Water-Use Sources of Impatiens hainanensis (Balsaminaceae), a Limestone-Endemic Plant Based on Fissure-Soil Habitat Function[J],2021,13(16).
APA	Huang, Weixia,Zhong, Yunfang,Song, Xiqiang,Zhang, Cuili,Ren, Mingxun,&Du, Yanjun.(2021).Seasonal Differences in Water-Use Sources of Impatiens hainanensis (Balsaminaceae), a Limestone-Endemic Plant Based on Fissure-Soil Habitat Function.SUSTAINABILITY,13(16).
MLA	Huang, Weixia,et al."Seasonal Differences in Water-Use Sources of Impatiens hainanensis (Balsaminaceae), a Limestone-Endemic Plant Based on Fissure-Soil Habitat Function".SUSTAINABILITY 13.16(2021).