|Table of Contents|

Responses of Dominant Plant Stipa krylovii of Alpine Steppe in Tebaten Plateau to Precipitation Fluctuation(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年18
Page:
109-113
Research Field:
Publishing date:

Info

Title:
Responses of Dominant Plant Stipa krylovii of Alpine Steppe in Tebaten Plateau to Precipitation Fluctuation
Author(s):
ZHANG Baocheng; LYU Chaoyan
School of Biological and Agricultural Science and Technology，Zunyi Normal University，Zunyi，Guizhou 563002
Keywords:
climatic change; alpine grassland; productivity; precipitation amount; soil temperature; extreme events
PACS:
-
DOI:
10.11937/bfyy.20163868
Abstract:
Based on the observation data of fixed sample plots at agricultural meteorological station，the effects of precipitation fluctuation on dominant species and weeds were studied.The results showed that the cluster number and productivity of Stipa krylovii was positive with 0-20 cm soil temperature.Conversely，cluster number and productivity of weed showed negative to 0-20 cm soil temperature.During the study period，precipitation amount showed an increasing trend，with greater fluctuation.The fluctuation of annual precipitation caused fluctuation of cluster number and productivity of Stipa krylovii,and weed biomass.In extreme drought years，the cluster number and productivity of Stipa krylovii presented rapid increased，while weeds productivity was very low.The results indicated that fluctuation of precipitation played an important role in driving community composition change in alpine grassland.

References:

[1]李林,陈晓光,王振宇,等.青藏高原区域气候变化及其差异性研究[J].气候变化研究进展,2010,6(3):181-186.

[2]张文纲,李述训,庞强强.青藏高原40年来降水量时空变化趋势[J].水科学进展,2009,20(2):168-176.
[3]张法伟,李红琴,李英年,等.青藏高原高寒草甸气温、降水和地上净初级生产力变化的周期特征[J].应用生态学报,2009,20(3):525-530.
[4]周睿,杨元合,方精云.青藏高原植被活动对降水变化的响应[J].北京大学学报(自然科学版),2007,43(6):771-775.
[5]LUO T X,LI W H,ZHU H Z.Estimated biomass and productivity of natural vegetation on the Tibetan Plateau[J].Ecological Applications,2002,12(4):980-997.
[6]MA W H,HE J S,YANG Y H,et al.Environmental factors covary with plant diversity-productivity relationships among Chinese grassland sites[J].Global Ecology and Biogeography,2010,19(2):233-243.
[7]YANG Y H,FANG J Y,PAN Y D,et al.Aboveground biomass in Tibetan grasslands[J].Journal of Arid Environments,2009,73(1):91-95.
[8]武建双,李晓佳,沈振西,等.藏北高寒草地样带物种多样性沿降水梯度的分布格局[J].草业学报,2012,21(3):17-25.
[9]沈振西,周兴民,陈佐忠,等.高寒矮嵩草草甸植物类群对模拟降水和施氮的响应[J].植物生态学报,2002,26(3):288-294.
[10]徐凌翔,程玉,刘帆,等.尕海湖滨湿地种子库初探[J].植物科学学报,2011,29(5):589-598.
[11]朱宝文,郑有飞,陈晓光.高寒针茅草原植物生长季土壤水分动态变化规律[J].干旱地区农业研究,2009,27(3):96-100.
[12]周华坤,赵新全,温军,等.黄河源区高寒草原的植被退化与土壤退化特征[J].草业学报,2012,21(5):1-11.
[13]孙海群,张集民.青海针茅属植物的调查研究初报[J].青海畜牧兽医学院学报,1992,9(2):14-19.
[14]卢生莲,吴珍兰.中国针茅属植物的地理分布[J].植物分类学报,1996,34(3):242-253.
[15]王长庭,王启基,沈振西,等.模拟降水对高寒矮嵩草草甸群落影响的初步研究[J].草业学报,2003,12(2):25-29.
[16]刘冉,李彦,刘燕.盐生荒漠CO2通量对两个极端降水年份响应[J].生态学杂志,2013,32(10):2545-2551.
[17]SADRAS V O,BALDOCK J A.Influence of size of rainfall events on water-driven processes-II.Soil nitrogen mineralisation in a semi-arid environment[J].Australian Journal of Agricultural Research,2003,54(4):353-361.
[18]ZHANG B C,CAO J J,BAI Y F,et al.Effects of rainfall amount and frequency on vegetation growth in a Tibetan alpine meadow[J].Climatic Change,2013,118(2):197-212.
[19]刘钦普,林振山.内蒙古草原羊草群落优势物种对气候变暖的响应[J].地理科学进展,2006,25(1):63-71.

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Last Update: 2017-10-06