干旱区生态环境知识资源中心(Arid): 宁夏压砂地不同植被类型土壤干燥化特征

Arid

	宁夏压砂地不同植被类型土壤干燥化特征
其他题名	Characteristics of Deep Soil Desiccation of Gravel-sand Mulched Field in Different Vegetation Zones of Ningxia
	王幼奇; 张兴; 陆学娥; 赵云鹏; 包维斌; 白一茹
来源期刊	西北植物学报
ISSN	1000-4025
出版年	2018
卷号	38 期号:11 页码:2101-2109
中文摘要	该研究在观测压砂地沙枣、柠条、西瓜、枸杞及草地土壤含水量的基础上,分析比较不同植被类型的土壤含水量、水分过耗量、干燥化指数、干层厚度等土壤干燥化特征,以揭示压砂地不同植被类型的土壤干燥化效应,为宁夏中部旱区压砂地可持续发展提供理论依据。结果表明:(1)不同植被类型下0~600 cm土壤含水量、贮水量和有效贮水量均值分别为7.163%、591.978 mm和187.088 mm,土壤水分过耗量均值为274.942 mm。(2)不同植被类型的土壤剖面含水量随深度增加呈先减小后增大的趋势;除西瓜地外,其余植被类型的土壤剖面含水量明显低于当地土壤稳定湿度。(3)不同植被类型的土壤平均干燥化系数介于2.152%~85.026%,干燥化系数均值为37.674%,属严重干燥化强度,其中柠条地和沙枣地均达到强烈干燥化强度;土壤平均干层厚度达到或超过500 cm,干燥化程度由强到弱依次为柠条地>沙枣地>枸杞地>草地>西瓜地。(4)典型相关分析发现,经纬度、高程、植被类型、粉粒及砂粒含量等环境因子是影响土壤干燥化指数、干层内平均含水量等干燥化指标的重要因素。
英文摘要	Based on observation of soil moisture in deep soil layers in Elaeagnus angustifolia,Caragana korshinskii,Citrullus lanatus,Lycium chinense and grassland on the gravel-sand mulched field in the arid zone of central Ningxia,we calculated,analyzed and compared soil moisture content,soil water overuse rate,soil desiccation indexes and thickness of desiccated soil layer in different vegetation zones,to provide the theory basis for improving the utilization on the gravel-sand mulched field in the arid zone of central Ningxia.Results show as follows:(1)mean soil moisture content,water storage and available soil water storage were 7.163%,591.978 mm and 187.088 mm of different vegetation zones on the gravel-sand mulched field.The average soil water overuse rate was 274.942 mm.(2)The soil moisture of different vegetation types show the overall trend was reduced,then increased from the depth of the surface to 600 cm.In addition to watermelon,the water moisture content of other vegetation was significantly lower than soil stable moisture.(3)The soil desiccation index of different vegetation zones was in the range of 2.152%~85.026%,and mean soil desiccation index was 37.674%,falling into the category of severely desiccated.The C.korshinskii and E.angustifolialand were extreme desiccated.The average thickness of the desiccated soil layer in different vegetation zones was 500 cm.The order of soil moisture content is: C.korshinskii land>E.angustifolialand>L.chinenseland>grassland>C.lanatusland.(4)The canonical correlation analysis showed that environmental factors such as latitude,longitude,elevation,vegetation type,silt content and sand content were significantly factors affecting soil desiccated index and soil water content in the inner of dried soil layer.
中文关键词	宁夏中部旱区 ; 植被类型 ; 土壤含水量 ; 土壤干燥化 ; 典型相关分析
英文关键词	the arid zone of central Ningxia vegetation type soil moisture content soil desiccation canonical correlation analysis
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6390801
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/2XILL650/238499
作者单位	宁夏大学资源环境学院;;旱区特色资源与环境治理教育部国际合作联合实验室, ;;旱区特色资源与环境治理教育部国际合作联合实验室, 银川;;银川, ;; 750021;;750021
推荐引用方式 GB/T 7714	王幼奇,张兴,陆学娥,等. 宁夏压砂地不同植被类型土壤干燥化特征[J]. 宁夏大学,2018,38(11):2101-2109.
APA	王幼奇,张兴,陆学娥,赵云鹏,包维斌,&白一茹.(2018).宁夏压砂地不同植被类型土壤干燥化特征.西北植物学报,38(11),2101-2109.
MLA	王幼奇,et al."宁夏压砂地不同植被类型土壤干燥化特征".西北植物学报 38.11(2018):2101-2109.