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Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (22): 213-217.doi: 10.11924/j.issn.1000-6850.casb15020094

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Assessment of Soil Nutrient in Urban Greens in Main Cities of Hunan Province

Yan Hengqi   

  1. (Qiyang County Dajiang Forest Farm, Qiyang Hunan 426131)
  • Received:2015-02-22 Revised:2015-04-02 Accepted:2015-04-22 Online:2015-08-20 Published:2015-08-20

Abstract: In order to assess the soil nutrient in urban garden greens of main cities in Hunan Province, according to the topography of those cities, soil samples were collected from 6 hilly cities (Xiangtan, Zhuzhou, Hengyang, Chenzhou, Loudi and Shaoyang), 4 mountainous cities (Huaihua, Jishou, Zhangjiajie and Yongzhou), and 4 plain cities (Changde, Yiyang, Yueyang and Changsha). Soil of each city sampled according to 4 different land-used types, including park, administrative institution (school, hospital and government institution), residential area and arterial road. The results showed that: (1) the pH of garden greens in main cities were relatively high, with the average value of 7.9, while the contents of SOM were relatively low (6.8 g/kg), the contents of NH4 -N and NO3--N were low, AP (Available P), AK (Available K), ACa (Available Ca) and AMg (Available Mg) were at higher levels, AS (Available S), AFe (Available Fe), ACu (Available Cu), AMn (Available Mn), AZn (Available Zn) and AB (Available B) had moderate contents; (2) land-use types significantly affected soil nutrient contents in plain cities, the soil pH of greens in residential area was significantly higher than that in administrative institution, park and arterial road, the soil contents of AS, ACu, AZn and AMn in park greens were significantly lower than that in the other 3 land-use types; (3) soil nutrient contents had significant differences among different topographies, the soil pH in mountainous and hilly cities were significantly higher than that in plain cities, the contents of SOM, AK, AMg, NH4 -N, ACu, ACa and AMn in mountainous cities were significantly lower than that in hilly and plain cities, the contents of AP and AB in hilly cities were significantly higher than that in mountainous and plain cities, the contents of AS and AFe in plain cities were significantly higher than that in hilly and mountainous cities. All the results could provide theoretical and practical significance for the construction of landscape green system.