干旱区生态环境知识资源中心(Arid): 土壤类型和降雨变化对猪毛蒿种群动态的影响

Arid

	土壤类型和降雨变化对猪毛蒿种群动态的影响
其他题名	Effects of Soil Types and Precipitation Variation on Dynamic Status of Artemisia scoparia Population
	苏莹 1; 李月飞 1; 陈林1 ; 祝忠有 1; 袁闯 2; 孟文婷 1; 朱林 1
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2019
卷号	36 期号:5 页码:1175-1185
中文摘要	以分布在宁夏盐池县荒漠草原的广布种猪毛蒿(Artemisia scoparia)为研究对象,选择3种土壤类型(风沙土、风化基岩残积土和灰钙土),利用野外试验装置改变降雨格局,采用定点样方法,探讨其对猪毛蒿种群动态的影响。结果表明:风化基岩残积土的土壤体积含水率高于风沙土和灰钙土;增雨区,风沙土、风化基岩残积土和灰钙土的土壤体积含水率分别提高了10.6%、6.6%和20.2%;减雨区则分别降低了44.1%、9.2%和20.1%。猪毛蒿的存活曲线属于凹型,为r-对策者。风沙土,猪毛蒿的冠幅较大,而灰钙土的密度较大。猪毛蒿生长中期,风沙土增雨区内的株高、冠幅较大,而减雨区的密度较大;风化基岩残积土,减雨区的密度较大,而增雨区的株高、冠幅较大;灰钙土,减雨区的密度最小,但株高、冠幅均较大。生长前期,土壤类型、水分与株高、冠幅呈负相关;生长中期,土壤水分与密度呈显著负相关,土壤类型与株高呈显著负相关、与冠幅为极显著负相关;生长后期,土壤水分与密度呈极显著负相关;土壤类型与冠幅呈极显著负相关。猪毛蒿生物量与全碳、全氮呈显著正相关关系(P <0.05),与全磷呈显著负相关关系(P <0.05)。表明土壤类型和降雨显著影响猪毛蒿的种群动态变化。土壤类型主要影响猪毛蒿的冠幅;猪毛蒿在生长中后期,土壤水分对其种群密度产生显著影响。该结论为荒漠草原的改良提供理论依据。
英文摘要	Artemisia scoparia,a herbaceous plant species in the desert steppe in Yanchi County,Ningxia,was taken as the research object.Three soil types including sandy soil,weathered bedrock residual soil and sierozem soil were selected,a field device was used to change the rainfall pattern,and the samples were collected from the delimited sample plots to analyze the effects of these factors on the dynamic status of A.scoparia population.The results showed that the bulk moisture content of weathered bedrock residual soil was higher than that of sandy soil and sierozem soil.In the rainfall-increased zone,the bulk moisture contents of sandy soil,weathered bedrock residual soil and sierozem soil were increased by 10.6%,6.6% and 20.2% respectively,but they were decreased by 44.1%,9.2% and 20.1% respectively in the rainfall-decreased area.The survival curve of A.scoparia was concave,and the plant species was a typical r-strategist.Comparatively,the canopy of A.scoparia growing on sandy soil was larger,but the density of the plants growing on sierozem soil was larger.At the middle growth stage of A.scoparia,the plant height and canopy on sandy soil in the rainfall-increased zone were higher,but the plant density in the rainfall-reduced area was higher.On weathered bedrock residual soil,the plant density in the rainfall-decreased was high,but the plant height and canopy were higher.On sierozem soil,the plant density in the rainfall-decreased zone was the lowest,but the plant height and canopy were higher.At the early growth stage,the soil type,soil moisture,plant height and canopy were negatively correlated.At the middle growth stage,there were the significant negative correlations between soil moisture and plant density,between soil type and plant height,and between soil type and canopy.At the later growth stage,the soil moisture content was extremely negatively correlated with plant density,and the soil type was extremely negatively correlated with canopy.The biomass of A.scoparia was positively correlated with total carbon content and total nitrogen content (P <0.05),and negatively correlated with total phosphorus content(P <0.05).
中文关键词	猪毛蒿 ; 土壤类型 ; 降雨变化 ; 存活曲线 ; 种群动态 ; 荒漠草原 ; 盐池县 ; 宁夏
英文关键词	Artemisia scoparia soil type precipitation variation survival curve population dynamic desert steppe Yanchi County Ningxia
语种	中文
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6562657
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/2XILL650/315831
作者单位	1.宁夏大学;;宁夏大学, 西北退化生态系统恢复与重建教育部重点实验室;;西北土地退化与生态恢复宁夏省部共建国家重点实验室培育基地, 银川;;银川, 宁夏;;宁夏 750021;;750021, 中国; 2.宁夏大学;;宁夏大学;;宁夏大学农学院, 西北退化生态系统恢复与重建教育部重点实验室;;西北土地退化与生态恢复宁夏省部共建国家重点实验室培育基地;;, 银川;;银川;;银川, 宁夏;;宁夏;;宁夏 750021;;750021;;750021, 中国
推荐引用方式 GB/T 7714	苏莹,李月飞,陈林,等. 土壤类型和降雨变化对猪毛蒿种群动态的影响[J]. 宁夏大学,2019,36(5):1175-1185.
APA	苏莹.,李月飞.,陈林.,祝忠有.,袁闯.,...&朱林.(2019).土壤类型和降雨变化对猪毛蒿种群动态的影响.干旱区研究,36(5),1175-1185.
MLA	苏莹,et al."土壤类型和降雨变化对猪毛蒿种群动态的影响".干旱区研究 36.5(2019):1175-1185.