Analysis N,P Output and Eutrophication Risk Under the Different Land Use Types

BAI Rong; LANG Nan-jun

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Analysis N,P Output and Eutrophication Risk Under the Different Land Use Types

更新时间：2024-11-07

- Analysis N,P Output and Eutrophication Risk Under the Different Land Use Types
- Vol. 25, Issue 6, (2011)
- 作者机构：
  
  1. 昆明理工大学环境科学与工程学院
  2. 云南省林业科学院
  3. 云南省煤田地质局
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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BAI Rong, LANG Nan-jun. Analysis N,P Output and Eutrophication Risk Under the Different Land Use Types[J]. 2011, 25(6).
DOI：

BAI Rong, LANG Nan-jun. Analysis N,P Output and Eutrophication Risk Under the Different Land Use Types[J]. 2011, 25(6). DOI：

摘要

在自然降雨条件下研究澄江尖山河流域4种不同土地类型输出地表径流的TN、TP、NO3--N、NH4+-N及溶解态磷(DP)的特征

并利用TN/TP和Inorganic-N/DP、NO3--N/DP、NH4+-N/DP等比率对4种土地类型输出径流的养分限制性和富营养化风险进行分析。结果表明

不同土地类型在防治不同土壤养分流失的能力上存在差异

NO3--N、NH4+-N、DP的输出浓度随着径流中TN、TP浓度的增大而增大;人工林和次生林输出的径流对抚仙湖水生自养生物的生长具有磷元素限制性

坡耕地输出径流的限制性不明显或受氮、磷元素共同限制

灌草丛输出的径流表现出氮元素限制性;4种土地类型输出的径流皆存在富营养化风险

且灌草丛输出径流的风险水平最低;次生林及灌草丛输出径流的各种N/P比受降雨量调控

降雨量、产流量及产沙量对人工林输出径流的各种N/P比影响不大

但对坡耕地输出径流的各种N/P比有重要影响。

Abstract

In the natural rainfall condition

this paper studied the characteristics of the output surface runoff of TN

dissolved inorganic-N(NH+4-N

NO-3-N) and dissolved phosphorus(DP) in four different land types of the Jianshan river basin of Chengjiang

and analyzed the nutrition restriction and the eutrophication risk of the output runoff of four land types by utilizing the ratios of TN/TP

inorganic-N/DP

NO-3-N/DP

NH+4-N/DP.The results showed that the ability of preventing soil nutrients loss differed in the dif...

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