| 生物土壤与生态 |
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| Population Structure and Point Pattern of Sophora moorcroftiana in Tibet Plateau, China |
| LI Hai-dong1,2, SHEN Wei-shou1, SHE Guang-hui2, SUN Ming1, YUAN Lei1, LIN Nai-feng1 |
| 1.Nanjing Institute of Environmental Sciences, Nanjing 210042, China; 2.College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China |
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Abstract Sophora moorcroftiana population in adjacent quadrats with size of 20 m×30 m on semi-fixed sandy land and fixed sandy land in the middle reaches of Yarlung Zangbo river was investigated, and the position, height and diameter at breast height (DBH) of each individual in the community were measured. The life history characteristics and spatial patterns of Sophora moorcroftiana were studied based on age class structure, spatial distribution and spatial association of different DBH classes. Results show that the age class structures of Sophora moorcroftiana on the semi-fixed sandy land and fixed sandy land are similar to the total population, that is, "wide at the base, slender at the crown, and the individual numbers reduce as the DBH class increases". The Sophora moorcroftiana population presents aggregation distribution for young trees, and aggregation intensity of Sophora moorcroftiana declines gradually with population growing, and the distribution pattern of adult trees tends to be random. The spatial association on the semi-fixed sandy land includes the positive correlation and independent pattern, and the spatially positive correlation decreases as the DBH class increases. There is a spatially positive association for Sophora moorcroftiana of all DBH classes on the fixed sandy land.
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Received: 28 October 2010
Published: 20 November 2011
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[1]中国科学院青藏高原综合科学考察队[M].西藏植物志(第二卷).北京:科学出版社,1985.
[2]沈渭寿.雅鲁藏布江中部流域沙地植被的分类和排序[J].中国沙漠,1997,17(3):269-273.
[3]刘志民,高红瑛,蒋德明.西藏日喀则流沙固定的几个问题[J].中国沙漠,2003,23(6):665-669.
[4]王为义.沙生槐抗旱性状的观察[J].植物学报,1980,22(3):293-294.
[5]许毓英.西藏砂生槐种子营养成分的初步研究[J].自然资源学报,1992,7(4):379-382.
[6]李玉祥.西藏砂生槐的生物学特性及综合利用[J].自然资源学报,1993,8(5):75-79.
[7]林少敏.西藏砂生槐种子萌发特性研究[J].草业科学,2002,19(5):30-32.
[8]张璐,李红玉.砂生槐总碱水乳剂及微乳剂农药的研制[J].农药,2007,46(11):746-748,754.
[9]魏兴琥,杨萍,李森,等.西藏沙漠化典型分布区沙漠化过程中的生物生产力和物种多样性变化[J].中国沙漠,2005,25(5):663-667.
[10]彭跃明.西藏雅鲁藏布江中部流域砂生槐固沙作用研究[J].林业科技,1997,22(6):6-8.
[11]赵文智.砂生槐沙生适应性初步研究[J].植物生态学报,1998,22(4):379-384.
[12]赵文智,刘志民.西藏特有灌木砂生槐繁殖生长对海拔和沙埋的响应[J].生态学报,2002,22(1):134-138.
[13]刘志民,赵文智,李志刚.西藏雅鲁藏布江中游河谷砂生槐种群种子库特征[J].生态学报,2002,22(5):715-722.
[14]赵阿曼,刘志民,康向阳,等.西藏特有植物砂生槐天然居群遗传多样性研究[J].生物多样性,2003,11(2):91-99.
[15]甄江红,刘果厚.不同生境四合木种群数量特征比较研究[J].中国沙漠,2008,28(3):462-467.
[16]杨洪晓,张金屯,吴波,等.毛乌素沙地油蒿种群点格局分析[J].植物生态学报,2006,30(4):563-570.
[17]张健,郝占庆,宋波,等.长白山阔叶红松林中红松与紫椴的空间分布格局及其关联性[J].应用生态学报,2007,18(8):1681-1687.
[18]李海东,沈渭寿,方颖,等.雅鲁藏布江中游河岸带几种主要沙生植物种群点格局分析[J].植物生态学报,2011,35(8):834-843.
[19]Ripley B D.Modelling spatial pattern[J].Journal of the Royal Statistical Society(Series B),1977,39:172-212.
[20]Diggle P J.StatisticalAnalysis of Spatial Point Patterns[M].London,UK:Academic Press,1983.
[21]Andersen M.Spatial analysis of two species interactions[J].Oecologia,1992,91:134-140.
[22]Dale M R T,Powell R D.A new method for characterizingpoint patterns in plant ecology[J].Journal of Vegetation Science,2001,12:597-608.
[23]刘小恺,刘茂松,黄峰,等.宁夏沙湖4种干旱区群落中主要植物种间关系的格局分析[J].植物生态学报,2009,33(2):320-330.
[24]李秋爽,张超,王飞,等.鄂尔多斯高原油蒿种群分布格局对降水梯度的反应[J].应用生态学报,2009,20(9):2105-2110.
[25]杨慧,娄安如,高益军,等.北京东灵山地区白桦种群生活史特征与空间分布格局[J].植物生态学报,2008,31(2):272-282.
[26]包昱峰,高甲荣,何明月,等.密云水库集水区荆条灌丛年龄结构研究[J].林业资源管理,2008(6):67-70.
[27]Wiegand T,Moloney K A.Rings,circles and null-models for point pattern analysis in ecology[J].Oikos,2004,104:209-229.
[28]张金屯.植物种群空间分布的点格局分析[J].植物生态学报,1998,22(4):344-349.
[29]Kenkel N C.Pattern of self-thinning in jack pine:testing the random mortality hypothesis[J].Ecology,1988,69:1017-1024.
[30]刘彤,赵新俊,贾亚敏,等.古尔班通古特沙漠南缘心叶驼绒藜种群更新的空间格局[J].中国沙漠,2008,28(2):258-265. |
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2011, Vol. 31 
