羊草草原不同退化阶段群落蒸散量比较

生态学杂志

羊草草原不同退化阶段群落蒸散量比较

王静^1，2;宝音陶格涛²

¹华东师范大学资源与环境科学学院环境科学系，上海 200062；²内蒙古大学生命科学学院，呼和浩特 010021

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-08-13 发布日期:2007-08-13

Evapotranspiration of Leymus chinensis steppe community at its different deteriorated phases.

WANG Jing^1,2; BAOYIN Taogetao²

¹Department of Environmental Science, School of Resources and Environment Science, East China Normal University, Shanghai 200062, China;²College of Life Science, Inner Mongolia University, Huhhot 010021, China

Received:1900-01-01 Revised:1900-01-01 Online:2007-08-13 Published:2007-08-13

摘要/Abstract

摘要： 运用微型蒸渗仪法对重度、中度和无退化羊草草原群落的日蒸散量进行了测定，并对其与土壤含水量、日均气温、大气湿度等因子的相关关系进行了分析。结果表明：各群落的日蒸散量均随着生长季推移逐渐增大，于6月中旬至7月中旬达到最大，而后逐渐降低；表层土壤含水量和日均气温是影响群落日蒸散量的主要因子，这2个因子与群落日蒸散量的回归关系极显著；群落生长季的累积蒸散量随着羊草草原群落的退化程度加深逐渐降低，且该值均低于生长季累积降水量。

关键词: 肥料利用率, 田间试验

Abstract: By using micro-lysimeter, this paper measured the daily evapotranspiration of Leymus chinensis steppe community at its heavily deteriorated, moderately deteriorated, and non-deteriorated phases. The results showed that at all phases, the daily evapotranspiration of the community increased with its growth, being the maximum from mid June to mid July, and decreased then. Daily mean air temperature and soil water content were the main factors affecting the evapotranspiration of the community, and significant correlations were observed between the evapotranspiration and these two factors. The accumulated evapotranspiration in the whole growth season decreased with the deterioration of the community, and its amount was always lower than the accumulated precipitation.

Key words: Recovery of fertilizer, Field experiment

王静;宝音陶格涛. 羊草草原不同退化阶段群落蒸散量比较[J]. 生态学杂志.

WANG Jing^1,2; BAOYIN Taogetao² . Evapotranspiration of Leymus chinensis steppe community at its different deteriorated phases. [J]. cje.

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