Arid
宁夏荒漠草原区猪毛蒿的动态生命表及生存分析
Alternative TitleDynamic life table and survival analysis of Artemisia scoparia in the desert steppe of Yanchi County, Ningxia
苏莹; 陈林; 李月飞; 杨新国; 王磊; 宋乃平; 朱林
Journal草业科学
ISSN1001-0629
Year Published2019
Volume36Issue:6Pages:1563-1577
Abstract in Chinese在宁夏盐池县荒漠草原区选择3种生境(风沙土、风化基岩残积土、灰钙土),利用野外增减雨试验装置,对猪毛蒿(Artemisia scoparia)进行连续两年的数量动态及生长监测。通过编制动态生命表,分析了猪毛蒿种群在异质生境下的生存状况。结果表明,猪毛蒿种群的存活曲线接近于Deevey-Ⅰ型,呈凸型。猪毛蒿数量在年际间存在显著差异(2018年数量多于2017年),且均于7月份达到峰值。从土壤类型来看,灰钙土生境下猪毛蒿种群存活数和累积生存率高于风沙土和风化基岩残积土。从增减雨条件来看,风沙土生境,2017年增雨区内种群的标准化存活量高于正常区和减雨区,2018年则与之相反;而风化基岩残积土、灰钙土生境,增雨区的标准化存活量均较低,这主要是由降水和种内竞争作用导致的。综合分析,灰钙土生境下猪毛蒿种群的存活量较多;降水量一定程度影响了猪毛蒿的存活,在较多的年份里,猪毛蒿的种内竞争加剧,进而降低了种群存活量。
Abstract in EnglishThree soil types, including sandy soil, residual soil of weathered bedrock, and sierozem were used to equip a device to control rainfall and monitor the growth and survival of Artemisia scoparia for two consecutive years. The results showed that the survival curve of A. scoparia populations was similar to that of a Deevey type I curve, having a convex shape. From the interannual perspective, there was a significant difference in the number of A. scoparia between years. The number of A. scoparia in 2018 was higher than that in 2017. The number of populations reached the peak in July. According to soil type, the survival rate and cumulative survival rate of A. scoparia populations in the sierozem habitat were higher than those in the sandy soil and residual soil of weathered bedrock. Regarding the amount of rainfall, in sandy soil, the standardized survival of populations in increased rainfall treatment was higher than that in normal and decreased rainfall treatments in 2017, but the opposite was true in 2018. The standardized survival of populations in the increased rainfall treatments was lower in weathered bedrock and sierozem habitats. These results were mainly caused by precipitation and intraspecific competition. In conclusion, the survival number of A. scoparia populations was higher in the sierozem habitat. Furthermore, precipitation affected the survival of A. scoparia to a certain degree. In years with more rainfall, the intraspecific competition of the A. scoparia population increased, which reduced the population survival.
Keyword in Chinese荒漠草原 ; 猪毛蒿 ; 异质生境 ; 动态生命表 ; 生存分析
Keyword in Englishdesert steppe Artemisia scoparia heterogeneous habitat dynamic life table survival analysis
Language中文
Country中国
Indexed ByCSCD
WOS SubjectPLANT SCIENCES
WOS Research AreaPlant Sciences
CSCD IDCSCD:6518885
Source Institution宁夏大学
Document Type期刊论文
Identifierhttp://119.78.100.177/qdio/handle/2XILL650/238959
Affiliation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国家重点实验室培育基地, 银川;;银川, 宁夏;;宁夏 750021;;750021, 中国
Recommended Citation
GB/T 7714
苏莹,陈林,李月飞,等. 宁夏荒漠草原区猪毛蒿的动态生命表及生存分析[J]. 宁夏大学,2019,36(6):1563-1577.
APA 苏莹.,陈林.,李月飞.,杨新国.,王磊.,...&朱林.(2019).宁夏荒漠草原区猪毛蒿的动态生命表及生存分析.草业科学,36(6),1563-1577.
MLA 苏莹,et al."宁夏荒漠草原区猪毛蒿的动态生命表及生存分析".草业科学 36.6(2019):1563-1577.
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