准格尔盆地梭梭天然更新幼苗空间格局与影响因子
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摘要
以吉木萨尔县和玛纳斯县的天然梭梭荒漠林的更新幼苗为研究对象,运用多尺度的点格局分析方法研究了准格尔盆地南缘天然梭梭更新幼苗的格局分布及影响因子。结果表明:吉木萨尔县梭梭幼苗格局聚集强度较大,且在0-10m连续尺度上呈聚集分布,聚集程度随距离增加先增强后减弱;玛纳斯县的梭梭幼苗格局在0-7.2m的连续尺度上都是聚集分布,聚集强度随尺度变大而降低;样地中梭梭幼苗数量吉木萨尔县是玛纳斯县的10倍以上。结合气象数据得知梭梭种子萌发和幼苗的生长的关键因素是11月、12月及来年4月、5月的降水量,且降水量在15mm以上有利于梭梭种子的萌发和幼苗生长。
Taking the natural forest of Haloxylon desert seedlings in Jimsar County and Manasi County as the research object, the pattern distribution and influence factors of natural Haloxylon ammodendron seedlings in the southern margin of the Zhungeer Basin were studied by multi-scale-point-pattern analysis method.The results showed that the aggregation intensity pattern of Haloxylon ammodendron seedlings in Jimsar County was larger and continuously distributed on the scale of 0-10 m,and the degree of aggregation increased first and then weakened with the increase of distance.The aggregation intensity pattern in Manasi County was aggregation distribution in the continuous scale of 0-7.2 m,theaggregation intensitydecreased with the increasing scale.The number of sample plots in Jimsar County was more than 10 times than that of Manasi County.Combined with meteorological data,the key factor of seed germination and seedling growth was the precipitation in November and December and April and May of the coming year,and precipitation with over 15 mm was favorable for seed germination and seedling growth.
Taking the natural forest of Haloxylon desert seedlings in Jimsar County and Manasi County as the research object, the pattern distribution and influence factors of natural Haloxylon ammodendron seedlings in the southern margin of the Zhungeer Basin were studied by multi-scale-point-pattern analysis method.The results showed that the aggregation intensity pattern of Haloxylon ammodendron seedlings in Jimsar County was larger and continuously distributed on the scale of 0-10 m,and the degree of aggregation increased first and then weakened with the increase of distance.The aggregation intensity pattern in Manasi County was aggregation distribution in the continuous scale of 0-7.2 m,theaggregation intensitydecreased with the increasing scale.The number of sample plots in Jimsar County was more than 10 times than that of Manasi County.Combined with meteorological data,the key factor of seed germination and seedling growth was the precipitation in November and December and April and May of the coming year,and precipitation with over 15 mm was favorable for seed germination and seedling growth.
引文
[1]吕朝燕,张希明,刘国军,等.准噶尔盆地西北缘梭梭种群结构和空间格局特征[J].中国沙漠,2012,32(2):380-387.
[2]李进军,薛斌瑞,柴宗政.民勤县荒漠—绿洲交错带梭梭种群的数量动态及分布格局[J].东北林业大学学报,2013,41(8):27-31.
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[6]李建贵,宁虎森,刘斌.梭梭种群性状结构与空间分布格局的初步研究[J].新疆农业大学学报,2003,26(3):51-54.
[7]常静,潘存德,师瑞锋.梭梭-白梭梭群落优势种种群分布格局及其种间关系分析[J].新疆农业大学学报,2006,29(2):26-29.
[8]丁峰,纪永福,陈芳,等.民勤梭梭林自然更新苗的空间分布特征[J].甘肃林业科技,2011,36(3):7-12.
[9]刘国军,张希明,吕朝燕,等.不同供水条件下梭梭幼苗生长动态的研究[J].中国沙漠,2012,32(2):388-394.
[10]吕朝燕,张希明,高智席,等.梭梭幼苗建成对积雪厚度的响应[J].北方园艺,2017(8):183-189.
[11]宋于洋,刘长青,赵自玉.石河子地区不同生境梭梭种群数量动态分析[J].西北植物学报,2008,28(10):2118-2124.
[12]刘国军,张希明,李建贵,等.准噶尔盆地东南缘天然更新梭梭苗期动态生命表及生存分析[J].干旱区研究,2010,27(1):83-87.
[13]阿依努尔·阿布拉,谢文磊,王泽,等.四种盐分胁迫对梭梭种子萌发及活力的影响[J].新疆农业科学,2015,52(11):2059-2064.
[2]李进军,薛斌瑞,柴宗政.民勤县荒漠—绿洲交错带梭梭种群的数量动态及分布格局[J].东北林业大学学报,2013,41(8):27-31.
[3]张锦春,王继和,安富博,等.民勤天然梭梭种群特征初步研究[J].中国沙漠,2009,29(6):1124-1128.
[4]宋于洋,李园园,张文辉.基于Ripley的K(r)函数和分形维数的梭梭种群空间格局[J].应用生态学报,2010,21(4):827-835.
[5]宋于洋,李园园,张文辉.梭梭种群不同发育阶段的空间格局与关联性分析[J].生态学报,2010,30(16):4317-4327.
[6]李建贵,宁虎森,刘斌.梭梭种群性状结构与空间分布格局的初步研究[J].新疆农业大学学报,2003,26(3):51-54.
[7]常静,潘存德,师瑞锋.梭梭-白梭梭群落优势种种群分布格局及其种间关系分析[J].新疆农业大学学报,2006,29(2):26-29.
[8]丁峰,纪永福,陈芳,等.民勤梭梭林自然更新苗的空间分布特征[J].甘肃林业科技,2011,36(3):7-12.
[9]刘国军,张希明,吕朝燕,等.不同供水条件下梭梭幼苗生长动态的研究[J].中国沙漠,2012,32(2):388-394.
[10]吕朝燕,张希明,高智席,等.梭梭幼苗建成对积雪厚度的响应[J].北方园艺,2017(8):183-189.
[11]宋于洋,刘长青,赵自玉.石河子地区不同生境梭梭种群数量动态分析[J].西北植物学报,2008,28(10):2118-2124.
[12]刘国军,张希明,李建贵,等.准噶尔盆地东南缘天然更新梭梭苗期动态生命表及生存分析[J].干旱区研究,2010,27(1):83-87.
[13]阿依努尔·阿布拉,谢文磊,王泽,等.四种盐分胁迫对梭梭种子萌发及活力的影响[J].新疆农业科学,2015,52(11):2059-2064.