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不同利用方式下沙地的水热变化
HYDROTHERMAL CHANGE OF SANDY LAND IN DIFFERENT LAND UTILIZATION
【摘要】 研究结果表明 :生长季内 (6~ 9月 ) ,气温变化幅度农田最大 ,林地最小 ;土壤温度 (0~ 2 0cm)差异以裸地最大 ,农田居次 ,林地最小 ;水面蒸发量由大到小排序为裸地 >农田 >林地 ;农田平均空气湿度为 85 .8% ,林地为 73.5 % ,裸地为 6 8.8% ;农田、林地与裸地相比均具有一定的水分涵蓄作用 ,但作物和林木对土壤水分的消耗作用也不容忽视
【Abstract】 Results of the study showed that in growing stage (June~September) change of air temperature was more in farmland, and less in forest land ; Difference in soil temperature(0~20cm) was most for bare land, was least for forest land, and for farmland was between the two. Evaporation capacity in water surface was in order: bare land > farm land > forest land; Average air humidity of farmland was 85.8%, 73.5% for forest land ,and 68.8% for the bare. Farmland and forest land have a certain function for water conservation in comparison to bare land, but couldn’t be ignored water consumption of crops.
- 【文献出处】 防护林科技 ,Protection Forest Science and Technology , 编辑部邮箱 ,2004年S1期
- 【分类号】S775
- 【被引频次】4
- 【下载频次】32