干旱区生态环境知识资源中心(Arid): 不同降水对荒漠灌丛土壤理化性质和地表植被分布的影响

Arid

	不同降水对荒漠灌丛土壤理化性质和地表植被分布的影响
其他题名	Effects of Different Precipitation on Soil Properties and Ground Vegetation Distribution in Desert Shrub Microhabitats
	郭志霞; 刘任涛; 冯永宏; 王文帆; 蒋嘉瑜
来源期刊	水土保持通报
ISSN	1000-288X
出版年	2021
卷号	41 期号:1 页码:56-65
中文摘要	[目的]揭示荒漠灌丛土壤理化性质及地表草本分布特征对降水分布变化的响应,为干旱风沙区人工植被建设模式选择、沙漠化防治及未来应对气候变化提供依据。 [方法]在榆林市榆阳区、盐池县、沙坡头保护区,以共有人工栽植灌丛柠条(Caragana korshinskii)、油蒿(Artemisia ordosica )为研究对象,以灌丛外裸地为对照,测定了灌丛内外微生境中土壤含水量、容重、pH值、电导率、全碳、全氮及土壤粒径含量,并调查了灌丛内外微生境地表草本植被分布特征。[结果]①榆阳研究区柠条灌丛显著提高土壤粗沙粒含量、草本植物个体数,降低土壤容重、土壤pH值;油蒿灌丛显著提高土壤黏粉粒含量、全碳、全氮(p< 0.05),降低草本植物物种数。盐池研究区柠条灌丛增加土壤全碳、全氮、草本植物高度,降低土壤细沙粒含量、土壤容重、草本植物物种数;油蒿灌丛降低土壤黏粉粒含量、草本植物物种数。沙坡头研究区柠条灌丛降低土壤电导率;油蒿灌丛下无草本植物。②从沙坡头到榆阳区,随降水量增加,灌丛微生境土壤细沙粒含量、土壤容重和土壤电导率降低,而土壤养分相对增加,草本植物物种数、个体数、高度均相对增加。[结论]荒漠区造林策略取决于灌丛种类和降水分布。榆阳研究区栽植柠条和油蒿灌丛、盐池研究区栽植柠条灌丛、沙坡头研究区栽植柠条灌丛更有利于促进沙漠化治理与固沙林地土壤-植被系统恢复。
英文摘要	[Objective] The distribution of soil physical and chemical properties and herbaceous vegetation among desert shrub microhabitats and their responses to precipitation change were studied to provide a basis for artificial afforestation and desertification control under future climate change in arid desertified regions. [Methods] The afforested shrubs, including Caragana korshinskii and Artemisia ordosica,were selected as research objects. The microhabitats inside and outside shrub canopies were set as sampling sites. At each sampling site, soil water content, bulk density, pH value, electrical conductivity, total carbon, total nitrogen, and soil particle size were measured,and the distribution of herbaceous vegetation was investigated, along with the climatic gradient, in the Yuyang,Yanchi,and Shapotou areas. [Results]① In Yuyang area,soil coarse sand content and herbaceous abundance significantly increased,while the soil bulk density and soil pH value decreased in the C. korshinskii shrub microhabitats relative to the open space. Soil clay content, total carbon,and total nitrogen significantly increased,while herbaceous abundance declined in the A. ordosica shrub microhabitats relative to the open space. In Yanchi area,soil total carbon, total nitrogen, and herbaceous plant height increased, while soil fine sand content, soil bulk density, and herbaceous species richness decreased in the C. korshinskii shrub microhabitats relative to the open space. Soil clay content and herbaceous species richness decreased in the A. ordosica shrub microhabitats relative to the open space. In Shapotou area, soil electrical conductivity decreased in the C. korshinskii shrub microhabitats,while there were no herbaceous plants observed in A. ordosica shrub microhabitats relative to the open space.② Along with the increase in the precipitation amount from the Shapotou area toward the Yuyang area,soil fine sand content, soil bulk density, and soil electrical conductivity decreased, while soil nutrients and herbaceous species richness,abundance,and height increased. [Conclusion] The afforestation strategies in desertified regions depended on shrub species and the precipitation distribution. C. korshinskii and A. ordosica shrubs afforested in Yuyang, C. korshinskii shrubs afforested in Yanchi,and C. korshinskii shrubs afforested in Shapotou could be an option for the recovery of soil-vegetation systems in desertified regions.
中文关键词	荒漠区 ; 灌丛 ; 土壤理化性质 ; 地表草本植被 ; 降水
英文关键词	desertified region shrub soil proprieties herbaceous vegetation precipitation
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Plant Sciences
CSCD记录号	CSCD:6927147
来源机构	宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/354433
作者单位	郭志霞, 宁夏大学农学院, 银川, 宁夏 750021, 中国. 冯永宏, 宁夏大学农学院, 银川, 宁夏 750021, 中国. 王文帆, 宁夏大学农学院, 银川, 宁夏 750021, 中国. 刘任涛, 宁夏大学, 西北土地退化与生态恢复国家重点实验室培育基地, 银川, 宁夏 750021, 中国. 蒋嘉瑜, 宁夏大学, 西北土地退化与生态恢复国家重点实验室培育基地, 银川, 宁夏 750021, 中国.
推荐引用方式 GB/T 7714	郭志霞,刘任涛,冯永宏,等. 不同降水对荒漠灌丛土壤理化性质和地表植被分布的影响[J]. 宁夏大学,2021,41(1):56-65.
APA	郭志霞,刘任涛,冯永宏,王文帆,&蒋嘉瑜.(2021).不同降水对荒漠灌丛土壤理化性质和地表植被分布的影响.水土保持通报,41(1),56-65.
MLA	郭志霞,et al."不同降水对荒漠灌丛土壤理化性质和地表植被分布的影响".水土保持通报 41.1(2021):56-65.