[1]刘玉萍,陈 西,王延华,等.滇池流域土壤养分分布及其对水体富营养化的影响[J].南京师范大学学报(自然科学版),2017,40(04):129.[doi:10.3969/j.issn.1001-4616.2017.04.021]
　Liu Yuping,Chen Xi,Wang Yanhua,et al.Soil Nutrients Distribution in the Small Catchment andTheir Effects on the Eutrophication of Dianchi Lake[J].Journal of Nanjing Normal University(Natural Science Edition),2017,40(04):129.[doi:10.3969/j.issn.1001-4616.2017.04.021]
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滇池流域土壤养分分布及其对水体富营养化的影响()
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《南京师范大学学报》（自然科学版）[ISSN:1001-4616/CN:32-1239/N]

卷:
第40卷
期数:
2017年04期
页码:
129
栏目:
·地理学·
出版日期:
2017-12-30

文章信息/Info

Title:
Soil Nutrients Distribution in the Small Catchment andTheir Effects on the Eutrophication of Dianchi Lake
文章编号:
1001-4616(2017)04-0129-08
作者:
刘玉萍1; 陈 西1; 王延华1; 2; 杨 浩1; 2; 张明礼1; 谢 标1; 崔 骏1
(1.南京师范大学地理科学学院,江苏 南京 210023)(2.江苏省物质循环与污染控制重点实验室,江苏 南京 210023)
Author(s):
Liu Yuping1; Chen Xi1; Wang Yanhua1; 2; Yang Hao1; 2; Zhang Mingli1; Xie Biao1; Cui Jun1
(1.School of Geography Science,Nanjing Normal University,Nanjing 210023,China)(2.Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control,Nanjing 210023,China)
关键词:
滇池; 小流域; 土壤养分; 土地利用方式; 生态风险
Keywords:
Dianchi lake; small catchment; nutrient; land use; ecological risk
分类号:
X53
DOI:
10.3969/j.issn.1001-4616.2017.04.021
文献标志码:
A
摘要:
在滇池松华坝小流域(SHB)和上游小流域(SY)选取荒地、林地和草地3种土地利用方式,分别采集0～40 cm土壤样品. 测定样品中总有机碳(TOC)、总氮(TN)和总磷(TP)含量,对比不同土地利用方式下土壤营养盐分布差异,并对流域内土壤营养盐负荷及其对水体富营养化的潜在影响进行评价. 结果表明,①SHB小流域:TOC、TN和TP的含量均为草地最高,分别为16.88、1.77和0.42 mg/g; TOC含量:林地>荒地,TN和TP在林地和荒地中的含量差异不明显; ②SY小流域不同土地利用方式下营养
Abstract:
In this paper,three types of land uses including abandoned land,forestland and grassland in the Songhuaba catchment(SHB)and the Shangyou catchment(SY)of the Dianchi watershed were investigated to determine the effects of land use on soil nutrients. Contents of total nitrogen(TN),total phosphorus(TP)and total organic carbon(TOC)in the soil samples were measured to compare the differences between three types of land uses in two catchments. Nutrients pollution and the risk of eutrophication was in discussion as well. Results are as follows:(1)In the SHB catchment,the highest contents of TOC(16.88 mg/g),TN(1.77 mg/g)and TP(0.42 mg/g)were observed in the grassland. TOC content in the forestland was higher than that in the abandoned land. While the difference of TN and TP contents between the forestland and grassland was not obvious.(2)In the SY catchment,the similar distribution was found. The contents of TOC,TN and TP were highest in the grassland and lowest in the abandoned land. Not obvious difference of TN and TP contents in three types of land uses were observed.(3)Comparing the soil profile,TOC,TN and TP contents in the layer of 0-20 cm soil were much higher than those in the layer of 20-40 cm in both catchments. The TOC,TN and TP contents in the surface soil of the grassland is much higher than those in the abandoned land.(4)The TN standard index of three types of land uses was beyond the safe line,reflecting high eutrophication potential. The key measure will be the control of nitrogen inputs in the small catchment. OI and TP standard indexes in the abandoned land were lower than those in the forestland and grassland. Three standard indexes in the layer of 0-20 cm soil are relatively high,indicating ecological risks.

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备注/Memo

备注/Memo:
收稿日期:2017-01-13.
基金项目:国家自然科学基金(41673107)、南京师范大学百人计划项目(184080H20181)、南京师范大学青蓝工程(184080H10330).
通讯联系人:王延华,教授,研究方向:流域生态环境演变. E-mail:wangyanhua@njnu.edu.cn
更新日期/Last Update: 2017-12-30