干旱区生态环境知识资源中心(Arid): 不同生境下三种荒漠植物叶片及土壤C、N、p的化学计量特征

Arid

	不同生境下三种荒漠植物叶片及土壤C、N、p的化学计量特征
其他题名	Stoichiometric characteristics of C,N,P for three desert plants leaf and soil at different habitats
	李从娟 1; 徐新文1 ; 孙永强 1; 邱永志 2; 李生宇1 ; 高培 3; 钟显彬 2; 闫健 2; 王桂芬 2
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2014
卷号	37 期号:5 页码:996-1004
中文摘要	以新疆地区三种典型荒漠植物梭梭、多枝柽柳和沙拐枣为研究对象，分别研究其不同生境（塔克拉玛干沙漠腹地塔中植物园一植物园，古尔班通古特沙漠明渠免灌林一免灌林，以及各自的原生生境一原始生境）下三种植物叶片和土壤的生态化学计量特征，每个处理5个重复。研究结果显示：土壤C、N、P含量在不同生境中的分布趋势相似，均表现为柽柳原生地和植物园较高，其他三者相对较低(P< 0.05)。然而C：N和C：P在柽柳原生地中最大，植物园、免灌林和梭梭原生地次之，而沙拐枣原生地最小。N：P在不同生境中不存在显著差异(P> 0.05)，这说明N和P含量在不同生境中的变化是一致的，即干旱区土壤保持了相对较为稳定的N：P。三种植物叶片C含量存在一定差异，总体表现为沙拐枣最高，其次为柽柳，梭梭相对较小(P< 0.05)，然而，植物叶片的N、P含量主要受物种影响，生境对植物叶片N、P含量影响不显著，叶片N：P均值为15.91 0.68，介于14和16之间，说明该区三种植物生长受N和P共同限制，然而N：P在不同生境及不同物种的协同作用下不存在显著差异(P> 0.05)，说明干旱区的这三种植物叶片在不同生境中具有相对较为恒定的N：P。这也进一步说明了这三种植物叶片的N：P不随生境土壤N、P含量的变化而变化，即就是这三种漠植物具有相对较高的内稳性机制，进而使其具备了较强的适应极端环境（干旱，贫瘠，盐碱）的能力。
英文摘要	Ecological stoichiometry is the study of the balance of multiple chemical elements in ecological interactions ,it plays an important role in determining plants and ecosystem nutrient supply and their balance. The content of leaf chemical element is restricted by environmental nutrient availability, especially the restricted nutrient. Leaf nitrogen (N) and phosphorus (P) concentrations are two of the key traits which make important effect on the function and dynamics of ecosystem. Leaf N, P and N: P vary with different species and sites. Study on the plants leaf nutrient content (N,P) and its variance in extreme environment is important not only in revealing the plants nutrient requirement and soil nutrient supply capacity,but also in revealing the plants adaptability to environment. Three typical sorts of desert plants,named Haloxylon ammodendron,Tamarix ramosissma and Calligonum mongolicunl,were involved in the study to investigate the effects of different habitats (Taklimakan Desert Botanical Garden - Botanical Garden, Gurbantonggut desert no irrigation shelterbelt - no irrigation shelterbelt,as well as their original habitats -original habitat) on three kinds of plant leaves ecological stoichiometry. The Two-Way ANOVA was used to determine the difference of soil and leaf C,N,P content and its stoichiometric ratio with various habitats. The results are as follows : in arid region, the surface soil presented as alkaline soil, soil salinity was significantly higher (4 mS-cm~(-1)) in the botanical garden than in other habitats (P< 0.05),which can be explained as the saline irrigation and strong evaporation in this region. There is a similar trend of C,N,P content of soil in different habitats for both the original habitat and botanical gardens; T. ramosissma were higher, while the others were relatively low ( P< 0.05). However, the largest C: N and C: P were presented at T. ramosissma original habitats,botanical gardens,no irrigation shelterbelt ,and H. ammodendron original habitats followed,and the smallest was C. mongolicunl original habitat. There was no significant difference for N: P at different habitats (P> 0.05),which indicates that the arid soil remains relatively stable N: P. There are some differences for leaves C content of three plants,C. mongolicunl was the highest,T. ramosissma followed,H. ammodendron was relatively small ( P< 0.05),indicating that the there were some differences for C accumulation of three plants. However, plant leaf N, P content is mainly affected by the species, and the effects of habitats on plant leaves N,P content were not significant, the mean leaf N: P is 15.91 0.68,and there is no significant difference between the different species in different habitats,this result indicates that leaves of plants in arid regions have a relatively constant N: P. It also further illustrates the desert plants have relatively higher stability, thereby making them have a strong adaptability to extreme environment such as drought, barren and saline. The results of the research will be both a good supplement and a meaningful attempt for ecological stoichiometry in extreme environment.
中文关键词	荒漠植物 ; 生态化学计量学 ; 生境 ; 叶片
英文关键词	desert plants ecological stoichiometry habitat leaf
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:5273352
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231138
作者单位	1.中国科学院新疆生态与地理研究所, 国家荒漠-绿洲生态建设工程技术研究中心, 乌鲁木齐, 新疆 830011, 中国; 2.中国石油天然气股份有限公司塔里木油田分公司, 库尔勒, 新疆 841000, 中国; 3.新疆信息工程学校, 乌鲁木齐, 新疆 830013, 中国
推荐引用方式 GB/T 7714	李从娟,徐新文,孙永强,等. 不同生境下三种荒漠植物叶片及土壤C、N、p的化学计量特征[J]. 中国科学院新疆生态与地理研究所,2014,37(5):996-1004.
APA	李从娟.,徐新文.,孙永强.,邱永志.,李生宇.,...&王桂芬.(2014).不同生境下三种荒漠植物叶片及土壤C、N、p的化学计量特征.干旱区地理,37(5),996-1004.
MLA	李从娟,et al."不同生境下三种荒漠植物叶片及土壤C、N、p的化学计量特征".干旱区地理 37.5(2014):996-1004.