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| Vegetation restoration technology of stone pit wasted lands of Jixi Mining Area |
| Man Xiuling,Meng Qingfeng,Liu Wenyong |
| School of Forestry,Northeast Forestry University,150040,Harbin,China |
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Abstract In order to provide a comprehensive theoretical and technological approach for vegetation restoration on stone pit wasted lands,three measures(soil dressing,water retention agent(WRA),and nutrition bags) were selected and compared,also the effects of them on enhancing the growth of tree species(Mongolian scotch pine,Pinus densiflora var.ussuriensis,Chinese seabuckthorn,Amorpha fruticosa,Caragana microphylla) were analyzed.The result showed that: 1) the survival rate of Chinese seabuckthorn was 95.2%,higher than that of Mongolian scotch pine(67.3%),Pinus densiflora var.ussuriensis(64.1%),Amorpha fruticosa(50.1%) and Caragana microphylla(9.4%) in the foreign soil treatment.According to mean height,crown width and coverage,the growth status of Chinese seabuckthorn was the best,179.1 cm,130.6cm,65.3% respectively.And the total N,hydrolysable N concentration of its soil under the soil dressing treatment was 1.97 g/kg and 294.01 mg/kg respectively,the organic matter content was 0.91%.The mean height of Mongolian scotch pine was 70.5 cm,but the total N,hydrolysable N concentration and organic matter content of its soil was 0.45 g/kg,52.36 mg/kg and 0.46% respectively.2) Compared to contrast group,WRA could improve the survival rate and height growth of Pinus densiflora var.ussuriensis significantly,increased 103% and 22% respectively.And its organic matter content and hydrolysable N of soil was 2.6 and 3.1 times of control group's respectively.The survival rate and height growth of Mongolian scotch pine planting with nutrient bags increased 116% and 23% respectively,and its organic matter content,total N and hydrolysable N of soil was 1.8,1.8 and 1.4 times respectively comparing to control group.3) The planting way under water retention agent and the nutrition bag may also increase the underbrush quantity and the degree of cover effectively.
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Received: 31 January 2009
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LI Changzhun, CHEN Lixin, DUAN Wenbiao, LI Shaoran, LI Yifei, YU Yingying, ZHU Jiahui, ZHAO Gerong. Effects of litter treatment on soil organic carbon, total nitrogen and total phosphorus in different forest types[J]. SSWC, 2020, 18(1): 100-109. |
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