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当前位置: 首页 > 文章 > 老哈河流域不同气候区间天然植被的实际蒸散发量研究 甘肃农业大学学报 2014 (5) 132-139
Position: Home > Articles > Actual evaporation of natural vegetation in different climate zones in basin of Laoha River Journal of Gansu Agricultural University 2014 (5) 132-139

老哈河流域不同气候区间天然植被的实际蒸散发量研究

作  者：
张芳芳;吴金萍
单  位：
陇南师范高等专科学校;长江水利委员会水文局长江下游水文水资源勘测局
关键词：
老哈河;天然植被;气候区间;蒸散发量;LAI;土壤含水量
摘  要：
本文基于PM公式,结合LAI数据,考虑冠层截留雨水的蒸发量,针对老哈河流域不同气候区条件,对天然植被进行了实际蒸散发量的测算.比较了在不同气候区条件下,天然植被蒸散发量的差异.结果表明:老哈河流域天然林地的实际蒸散发量明显要大于天然草地的实际蒸散发量.考虑土壤水分条件下,流域内不同气候区间的实际蒸散发量差异并不大,其中土壤水分含量是影响天然植被实际蒸散发量的重要因素.老哈河流域天然草地普遍存在土壤水分胁迫现象,需要在缺水时段,对天然植被进行人工补水,从而维持生态系统的稳定.
译  名：
Actual evaporation of natural vegetation in different climate zones in basin of Laoha River
作  者：
ZHANG Fang-fang;WU Jin-ping;Longnan Teachers College;Yangtze River Downstream Survey Bureau of Hydrological and Water Resources,Changjiang Water Resources Committee;
关键词：
Laoha River;;natural vegetation;;climate range;;evaporation capacity;;LAI;;soil moisture content
摘  要：
For the natural ecosystem,the quantity of evaporation of vegetation is the main part of the consume water.Different climate zones and vegetation types will lead to different amount of evaporation quantities.Based on PM formula,combined with LAI data and considering the quantity of rainfall evaporation intercepted by the canopy,this paper calculates and compares the amount of the actual evaporation of natural vegetation in different climate zones in the basin of Laoha River.The findings show that actual evaporation quantity of the natural wood in this basin is significantly more than that of the natural grassland.Considering the soil moisture condition,there is no significant difference between actual evaporation quantity in different climate zones in the basin.The soil moisture content is the important factor influencing quantity of actual evaporation of the natural vegetation.There are widespread phenomena that natural grasslands are in need of water in the basin of Laoha River.Consequently,the measures should be taken to fill water for natural vegetation artificially to maintain the stability of ecosystem.

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