Forest and Grassland Resources Research >
Effects of Different Tending Methods on Tree Growth and Soil Nutrients in Secondary Birch Forest
Received date: 2022-08-31
Revised date: 2022-10-24
Online published: 2023-04-21
This paper analyzed the effects of different tending methods on the tree growth and soil physicochemical properties in birch forest,based on a research conducted in a birch forest of Hebei Mulan Weichang State-owned Forest Farm.The results showed that:1)Effects on DBH:No significant difference between UM and CK,while the effect of quality management(QM)was significantly higher than the CK after 4 years.2)Effects on tree height:There was no significant difference on tree height growth.3)Effects on crown width:QM>UM>CK after 2 years,significantly;QM and UM both were significantly higher than the CK after 4 and 6 years,but there was no significant difference between QM and UM.4)Effects on average annual volume growth:No significant difference among QM,UM,and CK after 2 years.However,QM was significantly higher than UM and CK after 4 and 6 years.5)There was no significant difference of effect on PH value in 0~20 cm and 20~40 cm soil layers.6)In the 0~20 cm soil layer,the content of organic matter,alkali-hydrolyzed nitrogen,available phosphorus,and available potassium were all QM>UM>CK,with significant differences.In the 20~40 cm soil layer,there was no difference in the content of available potassium;the content of alkali hydrolyzed nitrogen was QM>UM>CK,with significant differences;effective phosphorus content was CK>UM>QM,with significant differences;the organic matter content of QM was significantly higher than that of UM and CK,but there was no difference between UM and CK.
Hui WANG , Aitao CHEN , Li XU . Effects of Different Tending Methods on Tree Growth and Soil Nutrients in Secondary Birch Forest[J]. Forest and Grassland Resources Research, 2022 , 0(zk1) : 85 -90 . DOI: 10.13466/j.cnki.lyzygl.2022.S0.013
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