首页|武功山山地草甸生态系统土壤无机磷垂直地带性分布特征

武功山山地草甸生态系统土壤无机磷垂直地带性分布特征

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
  • 维普
利用土壤无机磷形态分级方法,以江西省武功山山地草甸为研究对象,分析不同海拔高度(1 600～1 900 m)和不同土壤深度(0-20和20-40 cm)下,土壤无机磷形态的含量与分布特征,及无机磷各形态与有效磷的相关性.结果表明,1)武功山山地草甸土壤无机磷含量的变化范围在175.48～524.06 mg· kg-1,无机磷总量随海拔高度的升高而显著增加(P＜0.05),随土层深度的加深而显著减少,呈现表聚性;2)无机磷中水溶性磷、Al-P、Fe-P、O-P、Ca-P的变化范围分别是0.423～4.781、16.27～90.72、54.13～344.34、19.66～90.32、15.12～76.21mg·kg-1.各无机磷形态均随海拔升高呈现垂直分布规律,且具有表聚性.同一海拔及土层上,水溶性磷＜Ca-P＜ O-P＜Al-P＜Fe-P;3)有效磷含量与Al-P占无机磷总量的百分比呈极显著相关(P＜0.01),说明Al-P是该区域土壤有效磷的潜在来源.本研究既揭示了武功山山地草甸土壤无机磷形态的垂直地带性分布特征及其与有效磷的相关性,确定了土壤磷素有效性的潜在来源,同时也可为武功山山地草句生态系统的植被恢复提供理论依据.
Vertical distribution character of soil inorganic phosphorus in mountain meadow system of WuGong Mountain
The spatial distribution of soil inorganic phosphorus and the correlation between soil inorganic phosphorus and soil available phosphorus along the different altitudes (the altitude range from 1 600～ 1 900 m) and different soil depths were analyzed in mountain meadow system of Wugong Mountain.The soil inorganic phosphorus (P) content ranged in 175.48～524.06 mg · kg-1,significantly increased (P＜ 0.05) with the increase of altitude and decreased gradually with the increase of soil depth.There was a vertical distribution law and surface gathering character.The range of variation in water-soluble P,Al-P,Fe-P,O-P,Ca-P was 0.423～4.781,16.27～90.72,54.13～344.34,19.66～90.32,15.12～76.21 mg · kg-1,respectively.There were also vertical distribution and surface gathering character in each proportions of inorganic phosphorus.The percentage of Fe-P was the highest which followed by Al-P,O-P,Ca-P and water soluble P.There was a significantly positive correlations between soil available P and Al-P which suggest that Al-P was the potential resource for available P in this area.This research revealed the spatial distribution of soil inorganic P and the correlation between available P and soil inorganic P,determinate the resource of soil P which provided a guidance for vegetation restoration in mountain meadow ecosystem.

Wugong Mountainmountain meadowinorganic phosphorus morphologyspatial distribution

赵晓蕊、郭晓敏、张金远、牛德奎、单连友、张文元、魏晓华、陈伏生、黄尚书

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江西农业大学理学院,江西南昌330045

江西农业大学园林与艺术学院,江西南昌330045

江西农业大学国土学院,江西南昌330045

上海海丰农场,江苏大丰224153

Earth and Environmental Science, University of British Columbia(Okanagan Campus),Kelowna, British Columbia, Canada, V1V 1V7

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武功山 山地草甸 无机磷形态 分布特征

国家留学基金委2014国家公派高级研究学者及访问学者(含博士后)项目国家自然科学基金国家科技支撑计划项目江西省教育厅科技项目江西省环保厅科技计划项目江西省普通本科高校中青年教师发展计划访问学者专项基金

留金发[2014]3012号313601772012BAC11B006GJJ10107JXHBKJ2012-7赣财教指[2012]132号

2014

10.11829\j.issn.1001-0629.2014-0583

草业科学
中国草原学会 兰州大学草地农业科技学院

草业科学

CSTPCDCSCD北大核心
影响因子：0.854
ISSN：1001-0629
年,卷(期)：2014.31(9)
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