干旱区生态环境知识资源中心(Arid): 干旱区典型盐生植被群落土壤养分特征

Arid

	干旱区典型盐生植被群落土壤养分特征
其他题名	Soil Nutrient Properties Under Typical Halophytic Vegetation Community in Arid Region
	王静娅; 张凤华
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2014
卷号	28 期号:5 页码:235-241
中文摘要	为了探讨不同典型盐生植被群落对土壤养分和盐碱程度的影响，对生长在干旱区玛纳斯河流域扇缘带白刺、绢蒿、花花柴、雾滨藜、梭梭、柽柳6种群落的土壤养分和盐碱度进行研究。结果表明：从整体来看，6种植被覆盖类型下的土壤盐碱化均严重，养分呈现富钾缺氮少磷的状况。从土壤剖面来看，除土壤全钾含量变化微弱外，土壤有机质、全氮、全磷、速效氮、速效磷、速效钾含量均随着土层深度的增加而逐渐下降。有机质、速效磷变异系数较大，分别为45. 1%与86. 3%，而全钾和速效钾变异系数较小，为5. 4%和14.6%。从水平方向来看，土壤有机质与全氮含量均表现为梭梭>柽柳>花花柴>雾滨藜>绢蒿>白刺；土壤全磷、全钾平均含量在各群落之间差异较小；不同植被覆盖下的土壤速效钾含量以雾滨藜和梭梭群落均较高，分别为454 mg/kg和405 mg/kg，在0 20 cm 土壤表层，柽柳和雾滨藜群落土壤碱解氮、速效磷含量较高。土壤电导率以花花柴群落最高，为5.14 S/m，柽柳最低，为0.88 S/m，不同群落随着土层深度增加，pH均呈现增加趋势，但变异系数很低，而土壤电导率变异系数均较大，其中柽柳最高，达74. 18%，说明不同土层土壤盐分受群落影响较为明显。研究表明，干旱区梭梭与柽柳群落土壤积聚养分能力较强，而柽柳具有明显降盐效果，花花柴表层土壤有很强聚盐性。相关性分析显示，有机质含量与其他养分含量之间均表现出极显著相关(P<0.01)，土壤有机质是引起其他土壤养分性质变化的主要因素。
英文摘要	Nutrient properties and soil salinization of six vegetation types(Nitraria tangutorum,Seriphidium kaschgaricum,Karelinia caspia,Bassia dasyphylla , Haloxylon ammodendron , Tamarix ramosissima ) were investigated in the alluvial fan area of Manas River watershed. The results showed that in the whole, the soil salinization and nutrient condition was rich potassium, nitrogen and phosphorus deficiency. In the vertical distance of soil profile,under the different vegetations,except for the total potassium in the different soil layers, which slightly differed, the soil organic matter contents, total nitrogen, available nitrogen, available phosphorus and available potassium contents in the different soil layers gradually decreased as the soil layers went deeper. The variation coefficient of soil organic matter and available phosphorus was larger, separately for 45. 1% and 86. 3%, and variation coefficient of total potassium and available potassium was smaller, for 5. 4% and 14. 6%. In the horizontal direction, different vegetations to retain organic matter, the total nitrogen all ranked in the order of Haloxylon ammodendron >Tamarix ramosissima > Karelinia caspia >Bassia dasyphylla>Seriphidium kaschgaricum>Nitraria tangutorum. The average content of soil total phosphorus,total potassium in different communities changed little. The average available potassium of Haloxylon ammodendron and Bassia dasyphylla was higher, separately for 454 mg/kg and 405 mg/kg, and in the surface layer(0 20 cm) , the available nitrogen and available phosphorus content of Tamarix ramosissima and Bassia dasyphylla were higher. With the increase of soil depth, pH increased, and the variation coefficient was very low,but the variation coefficients of soil electrical conductivity was larger, of which Tamarix ramosissima was the highest, for 74. 18%,which showed that in soil layer, soil salt content was affected by the different communities obviously. It suggested that Haloxylon ammodendron and Tamarix ramosissima had a stronger ability to accumulate soil nutrient, and Tamarix ramosissima could reduce salt obviously, and the surface soil of Karelinia caspia had a stronger ability to accumulate salt. Correlation analysis showed that, organic matter and other nutrient content showed significant correlation(P<0. 01). Soil organic matter was the main reason resulting in the change of other soil nutrient properties.
中文关键词	土壤养分 ; 盐生植被 ; 玛河流域 ; 干旱区
英文关键词	soil nutrient halophytic vegetation Manas River watershed arid region
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5274100
来源机构	石河子大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231774
作者单位	石河子大学农学院, 石河子, 新疆 832003, 中国
推荐引用方式 GB/T 7714	王静娅,张凤华. 干旱区典型盐生植被群落土壤养分特征[J]. 石河子大学,2014,28(5):235-241.
APA	王静娅,&张凤华.(2014).干旱区典型盐生植被群落土壤养分特征.水土保持学报,28(5),235-241.
MLA	王静娅,et al."干旱区典型盐生植被群落土壤养分特征".水土保持学报 28.5(2014):235-241.