有什么好看的动画苏北泥质海岸盐碱地杨树纯林土壤的改良效应

2021年1月4日发(作者：丁衡高)

苏北泥质海岸盐碱地杨树纯林土壤的改良效应
王洪;许跃华;张金池;张瑜;杨兴春


【期刊名称】《中国水土保持科学》

【年(卷),期】2013(011)001

【摘要】In order to understand the ability of forest land to improve soil
properties, at the Dafeng forest farm of the muddy sea-coast in
northern Jiangsu Province, pure forest of Populus tomentos at the
different ages (6a、7a、16a、19a) , and 16-year- old pure forest of
Metasequoia glyptostroboides were selected for the study and the
beach land of Phragmites communis was selected as control group, the
physical and chemical properties of of soil were studied, such as bulk
density, organic matter content, total nitrogen content, total
phosphorus content and pH value of soil. The effect of the different age
in the same species, the different species in the same age, the forest
land, the beach land of Phragmites communis on the physical and
chemical properties of soil was discussed. The paper gives out some
research results as follows. 1 ) the Populus tomentos pure forest has a
good ability to improve soil properties, such as reducing bulk density
and pH value, increasing the content of organic matter, total nitrogen
and total phosphorus. 2) The ability of soil improvement is closely
related to forest age and root distribution. The higher forest age is, the
stronger the ability of soil improvement is. With the increased soil depth,