干旱区生态环境知识资源中心(Arid): 荒漠草原异质生境下猪毛蒿种群动态

Arid

	荒漠草原异质生境下猪毛蒿种群动态
其他题名	Population dynamics of Artemisia scoparia in heterogeneous habitats in the desert steppe
	陈林; 苏莹; 李月飞; 宋乃平; 王磊; 杨新国; 邱开阳; 刘波
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:2654-2666
中文摘要	以荒漠草原猪毛蒿种群为对象,设置风沙土、灰钙土和基岩风化沉积土3个生境下增水30%、减水30%和对照3个处理,编制猪毛蒿种群的动态生命表,绘制种群存活和死亡曲线,分析异质生境下猪毛蒿种群动态规律,研究猪毛蒿年内年际间种群动态特征.结果表明:猪毛蒿种群存活曲线趋于Deevey-I型,即生长前期存活率较高,趋于稳定状态,死亡率基本维持在较低的水平,生育期末种群死亡率则上升较快.各生境下猪毛蒿个体的存活数均呈前期波动后期下降的趋势,风沙土和灰钙土生境下死亡率的波动变幅较大,增减水处理对猪毛蒿种群死亡率的影响无显著差异.土壤类型对猪毛蒿株高、冠幅、密度、盖度和生物量均有显著影响,降水处理对猪毛蒿株高、冠幅和盖度影响显著,对密度和生物量无显著影响,而土壤类型和降水处理的交互作用仅对株高和冠幅有显著影响.基岩风化沉积土生境下猪毛蒿生物量的可塑性指数显著高于风沙土和灰钙土,灰钙土和基岩风化沉积土生境下盖度可塑性显著高于风沙土.增水处理的密度可塑性指数显著高于对照和减水处理.株高和冠幅的可塑性指数较高,说明在不同的生境压力下,猪毛蒿可以通过优先调节这两个参数来应对生境的变化.
英文摘要	To understand the intra- and inter-annual population dynamics of Artemisia scoparia in the desert steppe, we set up three treatments, i.e.,increasing the precipitation by 30%, reducing the precipitation by 30%, and the control (CK) in each soil habitat of aeolian sandy soil, sierozem soil,and bedrock weathered sedimentary soil. We drew up the dynamic life table to produce population survival and death curves and analyzed the population dynamics of A. scoparia in different habitats. Results showed that the survival curve of A. scoparia was approached to Deevey-1 type. The survival rate was high in the early growth stage and tended to be relatively stable. The mortality rate maintained at a low level, but rose fast at the end of the growth stage. The individual survival number of A. scoparia in all habitats fluctuated at the early stage and declined at the later stage. The mortality rates of A. scoparia in habitats of both aeolian sandy soil and sierozem soil fluctuated greatly. There was no significant difference in the effects of increased and decreased precipitation treatments on the mortality rate of A. scoparia. Soil types had significant effects on all parameters, including the plant height, crown width, density, cover, and biomass of scoparia. Precipitation treatments had significant impacts on plant height,crown width and coverage of A. scoparia,and had no significant effect on plant density and biomass. The interactions between soil type and precipitation treatments had only a significant impact on plant height and crown width. The plasticity index of biomass in the habitat of bedrock weathered sedimentary soil was significantly higher than that in habitats of aeolian sandy soil and sierozem soil,while the plasticity index of plant coverage in the habitats of both sierozem soil and bedrock weathered sedimentary soil were significantly higher than that in the habitat of aeolian sandy soil. The density plasticity index of increased precipitation treatment was significantly higher than those of CK and the decreased precipitation treatments. The plasticity index of plant height and crown width were higher than other parameters,indicating that A. scoparia could respond to habitat changes by giving priority to these two parameters under different habitat pressures.
中文关键词	荒漠草原 ; 猪毛蒿 ; 异质生境 ; 种群动态 ; 可塑性指数
英文关键词	desert steppe Artemisia scoparia heterogeneous habitat population dynamics plasticity index
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:6550023
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/2XILL650/239681
作者单位	宁夏大学, 西北土地退化与生态恢复国家重点实验室培育基地;;西北退化生态系统恢复与重建教育部重点实验室, 银川, 宁夏 750021, 中国
推荐引用方式 GB/T 7714	陈林,苏莹,李月飞,等. 荒漠草原异质生境下猪毛蒿种群动态[J]. 宁夏大学,2019,30(8):2654-2666.
APA	陈林.,苏莹.,李月飞.,宋乃平.,王磊.,...&刘波.(2019).荒漠草原异质生境下猪毛蒿种群动态.应用生态学报,30(8),2654-2666.
MLA	陈林,et al."荒漠草原异质生境下猪毛蒿种群动态".应用生态学报 30.8(2019):2654-2666.