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生态学杂志 ›› 2009, Vol. 28 ›› Issue (11): 2319-2325.

• 研究报告 • 上一篇    下一篇

吉林省西部草地NPP时空特征与影响因素

罗玲1,2;王宗明1**;宋开山1;张柏1;刘殿伟1   

  1. 1中国科学院东北地理与农业生态研究所, 长春 130012;2中国科学院研究生院,北京 100039
  • 出版日期:2009-11-10 发布日期:2009-11-10

Spatiotemporal characteristics and related affecting factors of grassland net primary productivity in western Jilin Province.

LUO Ling1,2;WANG Zong-ming1;SONG Kai-shan1;ZHANG Bai1, LIU Dian-wei1   

  1. 1Institute of Northeast Geography and Agricultural Ecology, Chinese Academy of Sciences, Changchun 130012, China;2Graduate University of Chinese Academy of Sciences, Beijing 100039, China
  • Online:2009-11-10 Published:2009-11-10

摘要: 利用2000—2006MOD17A3数据集的年均NPP数据,通过GIS技术定量分析了吉林省西部草地NPP的时空变化特征及其自然和人文影响因素。结果表明:过去7年吉林省西部草地NPP平均值为232.14 g C·m-2·a-1NPP200300 g C·m-2·a-1的草地面积占草地总面积的59.47%77.60%的草地NPP呈增加趋势,NPP增加极显著的草地面积占草地总面积的15.00%;水分条件是吉林省西部草地生长的主要控制因素;居民地对吉林省西部草地NPP的影响远大于道路,尤其在2 km以内。

关键词: 二点叶蝉, 生命表参数, 寄主

Abstract: By using the annual net primary productivity (NPP) data from 2000-2006 MOD17A3 dataset and the GIS technique, the spatiotemporal characteristics of grassland NPP in western Jilin Province were studied, with the related affecting factors analyzed. During the past seven years, the mean grassland NPP in this province was 232.14 g C·m-2·a-1, and the grassland area with a NPP of 200-300 g C·m-2·a-1 accounted for 59.47% of the total. 77.60% of the grassland had an increasing NPP, and the grassland area with a remarkable increase of NPP accounted or 15.0% of the total. Water condition was the main cntrolling factor for grass growth, and residential points had far more effects than roads, especially within 2 km from grassland, on the NPP.

Key words: Cicadulina bipunctella, Life table parameters, Host plants