Analysis on the Growth Effect in the Initial Stage of Intercropping of Ormosia Hosiei Hemsl.et Wils in Western Hubei With Different Densities in Cunninghamia lanceolata Forests
The 22-year artificial Cunninghamia lanceolata forests were selected to intercrop and adjust the stand density to interplant Ormosia Hosiei Hemsl.et Wils in western Hubei,and three different density Ormosia Hosiei interplanting methods were designed:A-900 Cunninghamia lanceolata trees/hm2 intercropped with 600 trees of Or-mosia Hosiei Hemsl.et Wils in Western Hubei/hm2,B-750 Cunninghamia lanceolata trees/hm2 intercropped with 750 trees of Ormosia Hosiei Hemsl.et Wils in Western Hubei/hm2,and C-600 Cunninghamia lanceolata trees/hm2 intercropped with 900 trees of Ormosia Hosiei Hemsl.et Wils in Western Hubei/hm2.The growth effects of the in-tercropping of Ormosia Hosiei Hemsl.et Wils in Western Hubei with different densities in artificial Cunninghamia lanceolata forests were compared.The results indicated that the growth of Cunninghamia lanceolata and Ormosia Hosiei Hemsl.et Wils in Western Hubei increased with the decrease of conserved density of Cunninghamia lanceo-lata 6 years after intercropping.It had no significant influence on the preserving rate of the two tree species.The growth effect of the uneven aged mixed tiered forest formed through treatment with C was the best.The average DBH of Cunninghamia lanceolata was 22.6 cm;the average height of the tree was 16.8 m;the average volume of timber of a single tree was 0.3214 m3,and the average amount of growing stock was 192.197 m3.hm-2;the DBH of Ormosia Hosiei Hemsl.et Wils in Western Hubei was 5.5 cm;the average height of the tree was 6.5 m;the average volume of timber of a single tree was 0.0086 m3,and the average amount of growing stock was 7.224 m3/hm2;and the total amount of growing stock of Cunninghamia lanceolata and Ormosia Hosiei Hemsl.et Wils was up to 199.421 m3/hm2.
Cunninghamia lanceolata forestOrmosia Hosiei Hemsl.et Wils in western Hubeiconserved densityunderforest intercroppinggrowth effect
万方数据
维普
