2014•Anhui nongye kexueRequires access
Study on Soil Physical and Chemical Characteristics under Different Afforestation Models in Limestone Mountain in the North of Jiangsu Province
Huang Wen-qin
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Abstract
[Objective]The effects of different afforestation models in limestone mountain on soil physical and chemical characteristics were studied.[Method]In this paper,five afforestation models i. e. Platycladus orientalis( L.) Franco、Cotinus coggygria Scop and Koelreuteria paniculata mixed forest,Platycladus orientalis( L.) Franco and Firmiana simplex mixed forest,Platycladus orientalis( L.) Franco forest,Platycladus orientalis( L.) Franco and Ligustrum compactum mixed forest and the control slope were selected as objects of studies in Lvliang forest farm of Tongshan district,Xuzhou city,studying different afforestation model and control slope how to influence on soil physical and chemical characteristics. [Result]Five afforestation models are significantly improved the physical and chemical characteristics of soil,Platycladus orientalis( L.) Franco and Deutzia scabra Thunb mixed forest showed the best improvement effects. For improving soil physical characteriistics,Platycladus orientalis( L.) Franco、Cotinus coggygria Scop and Koelreuteria paniculata mixed forest showed the lower improvement effects than other four afforestation models which were not obvious among them. For improving soil chemical characteristics,Platycladus orientalis( L.) Franco and Deutzia scabra Thunb mixed forest showed better improvement effects than other afforestation models for soil organic matter,hydrolyzable nitrogen,rapid available phosphorus,rapid available potassium,total phosphorus. Platycladus orientalis( L.) Franco forest showed the best improvement effects of total nitrogen and Platycladus orientalis( L.) Franco、Cotinus coggygria Scop and Koelreuteria paniculata mixed forest showed the best improvement effects of total potassium.[Conclusion]Platycladus orientalis( L.) Franco and Deutzia scabra Thunb mixed forest was more suitable planted in the study area than the other four kinds of afforestation models.