干旱区生态环境知识资源中心(Arid): 河西走廊荒漠盐碱地人工柽柳林土壤水盐分布

Arid

	河西走廊荒漠盐碱地人工柽柳林土壤水盐分布
其他题名	Distribution of soil moisture and salt of Tamarix ramosissima plantation in desert saline-alkali land of Hexi Corridor Region, China
	王世林; 曹文侠; 王小军; 李文; 李小龙; 王金兰
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2019
卷号	30 期号:8 页码:2531-2540
中文摘要	土壤盐碱化是一个全球性问题,植树造林是一种主要的改良措施.为了研究荒漠盐碱地10年人工柽柳林土壤水盐空间分布及生态改良效果,对2、4、6和8 m行间距柽柳灌下和行间的土壤水盐进行分析,并构建结构方程模型量化土壤水盐对植被的影响程度.结果表明:林地浅层土壤(0~40 cm)可溶性盐明显低于林外(CK),灌下土壤含水率高于行间.且6 m行间距柽柳的高度和冠幅及其灌下草本植物的盖度和生物量均大于其他行间距柽柳,阳离子在柽柳周围的富集程度为Na~+>K~+>Ca~(2+)>Mg~(2+),阴离子的富集程度为Cl->HCO_3->SO_4~(2-).土壤盐分含量最高的是MgSO_4,其次是CaCl_2、NaCl和MgCl_2,KHCO_3含量最少.土壤水盐中影响植被生长的最大因素是土壤水分,其次是盐分,最小为pH,权重大小分别是50.6%、29.5%和19.9%.
英文摘要	Soil salinization is a global problem. Afforestation is a major improvement practice for desert saline-alkali land. To examine ecological improvement effects and spatial distribution of soil moisture and salinity in Tamarix ramosissima plantation with the age of 10 years in desert salinealkali land,soil moisture and salt content between rows and under shrubs with row distance of 2, 4, 6,and 8 m were measured. The structural equation model was used to quantify the effects of soil water and salt changes on plant growth. The results indicated that soluble salt in shallow soil (0-40 cm) of T. ramosissima plantation was significantly lower than that outside the plantation,but soil moisture under shrubs was higher than that between rows. Among different row distances, the maximum values of height and canopy size of T. ramosissima and coverage and biomass of vegetation under the shrubs were found in row distance of 6 m. The enrichment degree of soil cations around taproot was in order of Na~+ > K~+ > Ca~(2+) > Mg~(2+) and anions were enriched with Cl >HCO_3 >SO_4~(2-). There were five kinds of salts in soil,with MgSO_4 being the most abundant,followed by CaCl_2, NaCl and MgCl_2, and the lowest being KHCO_3. Soil moisture had the strongest effects on vegetation, followed by soil salinity, and the lowest was soil pH, with values of 50.6%, 29.5% and 19.9%, respectively.
中文关键词	人工柽柳林 ; 水盐分布 ; 行间距 ; 生态恢复 ; 盐碱地
英文关键词	Tamarix ramosissima plantation distribution of soil moisture and salt row distance ecological restoration saline-alkali land
语种	中文
国家	中国
收录类别	CSCD
WOS类目	BIOLOGY
WOS研究方向	Life Sciences & Biomedicine - Other Topics
CSCD记录号	CSCD:6550008
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239679
作者单位	甘肃农业大学草业学院/中-美草地畜牧业可持续发展研究中心, 草业生态系统教育部重点实验室, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	王世林,曹文侠,王小军,等. 河西走廊荒漠盐碱地人工柽柳林土壤水盐分布[J]. 甘肃农业大学,2019,30(8):2531-2540.
APA	王世林,曹文侠,王小军,李文,李小龙,&王金兰.(2019).河西走廊荒漠盐碱地人工柽柳林土壤水盐分布.应用生态学报,30(8),2531-2540.
MLA	王世林,et al."河西走廊荒漠盐碱地人工柽柳林土壤水盐分布".应用生态学报 30.8(2019):2531-2540.