| Soil fertilizer change of different artificial forest on Loess plateau Gully |
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| DOI：10.7606/j.issn.1000-7601.2007.03.21 |
| Key Words: Loess plateau artificial forest soil fertilizer mixed forest |
| Author Name | Affiliation | | YUE Qing-ling | College of Resources and Environment Northwest A＆F University,Yangling,Shaanxi 712100,China | | CHANG Qing-rui | College of Resources and Environment Northwest A＆F University,Yangling,Shaanxi 712100,China | | LIU Jing | College of Resources and Environment Northwest A＆F University,Yangling,Shaanxi 712100,China | | TAO Wen-fang | College of Resources and Environment Northwest A＆F University,Yangling,Shaanxi 712100,China | | LIU Wen-juan | College of Resources and Environment Northwest A＆F University,Yangling,Shaanxi 712100,China |
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| Abstract: |
| By the survey of the soil vegetation、the sample test and the indoors analysis of the different soil profile,in the north of Shaanxi,Wuqi county,the artificial forest nutrient changes were researched,it indicated that the nutrient variety of the surface layer 0～20 cm was bigger than that of deeper profile.The mixed of Prunus armemiaca and the mixed of Hippopgae Rhamnoides and Prunus armemiaca were beneficial to improving organic matter quality of soil,reached 20.79 g/kg and 13.93 g/kg;the alkaline hydrolysis content of the mixed of Prunus armemiaca and Populus simonii had stonger increase extent,it reached 61.55 mg/kg and 61.11 mg/kg;the available phosphorus content of the mixed of Prunus armemiaca and Populus simonii was relatively higher than that of others,and it is 5.43 mg/kg;the available kalium content variety of Prunus armemiaca and the mixed of Prunus armemiaca and Populus simonii and Populus simonii were evident,they were 126.94,125.61 and 119.28 g/kg respectively.In order to improve soil nutrient contents,strengthen soil fertility,we must reinforce the soil ecological rehabilitation,and guard against land degradation in this area.It recommeds that the mixed forest of Prunus armemiaca and Hippopgae Rhamnoides should be planted in this region.The results showed that the mixed forest is better than purer forest to improve the soil nutrient. |
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