[1]DU Zhenyu,GE Zhongqiang,WANG Qinghua,et al.Assessment on Soil Quality of Platycladus orientalis Plantations in Central Mountainous Areas of Shandong Province and the Influence of Stand Density[J].Research of Soil and Water Conservation,2020,27(02):128-135.
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Assessment on Soil Quality of Platycladus orientalis Plantations in Central Mountainous Areas of Shandong Province and the Influence of Stand Density
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 02
Page number:
128-135
Column:
Public date:
2020-03-30
- Title:
- Assessment on Soil Quality of Platycladus orientalis Plantations in Central Mountainous Areas of Shandong Province and the Influence of Stand Density
- Keywords:
- central mountainous areas of Shandong Province; Platycladus orientalis plantation; soil quality; stand density
- CLC:
- S714.2; S753.3
- DOI:
- -
- Abstract:
- In order to understand the soil quality of long-term Platycladus orientalis plantations in central mountainous area of Shandong Province, and to study the effects of different stand densities on soil quality, based on field investigation and indoor analysis, the physical, chemical, biological and comprehensive quality of the soils of Platycladus orientalis plantations with different densities(1 300～6 400 trees/hm2)in central mountainous area of Shandong Province were studied by factor analysis, and the effects of stand densities on soil quality of plantations were discussed. The results showed that comprehensive scores of soil quality of Platycladus orientalis plantations were significantly and positively correlated with soil hardness, organic matter content and catalase activity(p<0.05), and had highly significant correlation with capillary porosity, available N content and urease activity(p<0.01). In comparison, average soil quality of Platycladus orientalis plantations in Heiyu forest farm was better than those in Yanzishan and Yuanshan forest farm, and the latter two differed slightly. The physical, chemical, biological and comprehensive quality scores of forest soils significantly decreased with the increase of stand density. Increasing stand density could increase plant nutrient uptake and decrease litter decomposition rate, which is not conducive to nutrient recycling in plantation system, resulting in a decline in soil quality of forest land. The average score of soil quality at low density(<2 500 trees/hm2)was 2.11, 2.02 and 2.27 times as much as those at stand densities of 2 500～3 500 trees/hm2, 3 500～4 500 trees/hm2 and >4 500 trees/hm2, respectively. These results indicated that the soil quality of Platycladus orientalis plantations was greatly affected by stand density in central mountainous areas of Shandong Province. The soil chemical, biological and comprehensive qualities were higher when the stand density was less than 2 500 plants/hm2. It is suggested that rational thinning measures should be taken to reduce stand density and improve soil quality in order to facilitate sustainable management of Platycladus orientalis plantation in central mountainous area of Shandong Province, so as to bring ecological benefits into full play.
- References:
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Last Update:
2020-02-25