干旱区生态环境知识资源中心(Arid): 石漠化区不同利用类型土地养分的含量及其生态化学计量特征

Arid

	石漠化区不同利用类型土地养分的含量及其生态化学计量特征
其他题名	Content and Ecological Stoichiometric Characteristics of Soil Nutrients under Different Land Utilization Types in Stony Desertification Area
	杨丹丽 1; 喻阳华 2; 秦仕忆 1; 钟欣平 1
来源期刊	西南农业学报
ISSN	1001-4829
出版年	2018
卷号	31 期号:9 页码:1875-1881
中文摘要	【目的】为贵州干热河谷石漠化地区土地资源的科学合理及高效利用提供参考。【方法】以贵州干热河谷石漠化地区种植火龙果(Hylocereus undulatus) 、金银花(Lonicera japonica) 、核桃(Juglans regia) 、柚木(Tectona grandis) 、玉米(Zea mays)和花椒(Zanthoxylum bugeanum) 6种典型植物土地为样地,采集各样地0 ~ 20 cm土样检测其有机碳(SOC) 、全氮(TN) 、全磷(TP)和全钾(TK)含量,并应用生态化学计量学方法统计分析该地区土壤C、N、P、K的生态化学计量特征。【结果】在干热河谷石漠化地区6种典型植物样地0 ~ 20 cm土层土壤的SOC、TN、TP和TK养分平均含量分别为19.16 ~ 70.17、1.69 ~ 6.79、0.06 ~ 3.12和8.60 ~ 77.04 g/kg,土壤养分的C∶ N、C∶ P、N∶ P、C∶ K、N∶ K和P∶ K分别为6.318 ~ 21.028、11.400 ~ 552.310、1.804 ~ 46.354、0.461 ~ 5.651、0.073 ~ 0.502和0.003 ~ 0.040。土壤养分SOC与C∶ K及P∶ K间呈显著正相关; TN与P∶ K呈显著正相关,与C∶ N和C∶ P呈显著负相关; TP与P∶ K呈极显著正相关,与C∶ P和N∶ P呈极显著负相关; TK与P∶ K呈极显著正相关,与C∶ P和N∶ P呈极显著负相关,与C ∶ K呈显著负相关;即SOC对C∶ K和N∶ K,TN、TP和TK对P∶ K的增加具有促进作用; TN对C∶ N和C∶ P,TP对C∶ P和N∶ P,TK对C∶ P、N∶ P和C∶ K的增加存在抑制效应。在土壤养分的各生态化学计量比之间,除C∶ K与N∶ P呈S函数外,其余各生态化学计量比间均呈一元二次函数关系。【结论】干热河谷石漠化地区的土壤有机质分解较快,并加速了其养分消耗,导致其土壤总体P素亏缺,在生产过程中应注意添加外源磷肥提高土壤肥力;在养分管理上,注重有机肥与无机肥配施。
英文摘要	【Objective】The aim of this paper is to provide a reference for scientific,reasonable and efficient utilization of land resources in dry-hot valley stony desertification area of Guizhou.【Method】The SOC,TN,TP and TK content of soil samples with 0-20 cm depth from six typical soil plots of Hylocereus undulatus,Lonicera japonica,Juglans regia,Tectona grandis,Zea mays and Zanthoxylum bugeanum in dryhot valley stony desertification area of Guizhou was determined and then the ecological stoichiometric characteristics of C,N,P and K in soils was statistically analyzed by using the ecological stoichiometric method.【Result】The average content of SOC,TN,TP and TK in soil samples with 0 - 20 cm depth from six typical soil plots is 19.16 - 70.17,1.69 - 6.79,0.06 - 3.12 and 8.60 - 77.04 g/kg respectively. The ratio of C∶ N,C∶ P,N∶ P,C∶ K,N∶ K and P∶ K is 6.318 - 21.028,11.400 - 552.310,1.804 - 46.354,0.461 - 5.651,0.073 - 0.502 and 0.003 - 0.040 separately. The SOC content of soil is significantly and positively correlated with C∶ K and P∶ K. The TN content of soil is significantly and positively correlated with P∶ K,and significantly and negatively correlated with C∶ N and C∶ P. The TP content of soil is significantly and positively correlated with P∶ K,and very significantly and negatively correlated with C∶ P and N∶ P. The TK content of soil is very significantly and positively correlated with P∶ K,very significantly and negatively correlated with C∶ P and N∶ P,and significantly and negatively correlated with C ∶ K. The SOC has the promotion effect on C∶ K and N∶ K. The TN,TP and TK content of soil has the promotion effect on P∶ K in soil also. The TN,TP and TK content in soil has the inhibition effect on C∶ N and C∶ P, C∶ P and N∶ P, and C∶ P,N∶ P and C∶ K respectively. In addition to the S function between C∶ K and N∶ P,there is a unitary quadratic function relationship between different ecological stoichiometric ratios.【Conclusion】The soil fertility can be improved by applying exogenous P fertilizer in agricultural production because the quicker decomposition of organic matter in soil speeds up consumption of soil nutrients and results in TP deficiency of soil in dry-hot valley stony desertification area. The combined application pattern of organic manure and inorganic fertilizer should be used in management of soil nutrients in dry-hot valley stony desertification area.
中文关键词	土地利用类型 ; 土壤 ; 生态化学计量学 ; 干热河谷石漠化区
英文关键词	Land utilization type Soil Ecological stoichometry Stony desertification area in dry-hot valley
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:6350556
来源机构	贵州师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238515
作者单位	1.贵州师范大学地理与环境科学学院, 贵阳, 贵州 550025, 中国; 2.贵州师范大学地理与环境科学学院;;贵州师范大学喀斯特研究院, ;;国家喀斯特石漠化防治工程技术研究中心, 贵阳;;贵阳, 贵州;;贵州 550025;;550001, 中国
推荐引用方式 GB/T 7714	杨丹丽,喻阳华,秦仕忆,等. 石漠化区不同利用类型土地养分的含量及其生态化学计量特征[J]. 贵州师范大学,2018,31(9):1875-1881.
APA	杨丹丽,喻阳华,秦仕忆,&钟欣平.(2018).石漠化区不同利用类型土地养分的含量及其生态化学计量特征.西南农业学报,31(9),1875-1881.
MLA	杨丹丽,et al."石漠化区不同利用类型土地养分的含量及其生态化学计量特征".西南农业学报 31.9(2018):1875-1881.