Impact of Socio-economic Factors on Soil Nitrogen in Fujiang River Basin

ZHU Linfu; LI Ting; ZHANG Shirong; YANG Hua; WU Jianfeng

doi:10.13961/j.cnki.stbctb.2015.02.001

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Impact of Socio-economic Factors on Soil Nitrogen in Fujiang River Basin

- Impact of Socio-economic Factors on Soil Nitrogen in Fujiang River Basin
- Bulletin of Soiland Water Conservation Vol. 35, Issue 2, Pages: 37-41(2015)
- 作者机构：
  
  1. 重庆师范大学地理科学学院GIS应用研究重庆市高校重点实验室,重庆,401331
  2. 四川农业大学资源环境学院四川省土壤环境保护重点实验室,四川,成都,611130
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2015.02.001
  CLC：
- Published：2015
- 稿件说明：
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ZHU Linfu, LI Ting, ZHANG Shirong, et al. Impact of Socio-economic Factors on Soil Nitrogen in Fujiang River Basin[J]. Bulletin of Soiland Water Conservation, 2015, 35(2): 37-41.
DOI：

ZHU Linfu, LI Ting, ZHANG Shirong, et al. Impact of Socio-economic Factors on Soil Nitrogen in Fujiang River Basin[J]. Bulletin of Soiland Water Conservation, 2015, 35(2): 37-41. DOI： 10.13961/j.cnki.stbctb.2015.02.001.

摘要

[目的] 了解四川省射洪县土壤氮素的空间分布特征及社会经济因素对其的影响。[方法] 以随机采样的土壤样点数据为基础

并结合社会经济数据

运用ArcGIS 9.3的地统计学、空间分析等方法进行分析研究。[结果] (1)该县土壤全氮含量1.08±0.29 g/kg

碱解氮含量100.24±34.80 mg/kg;全氮高值区(>1.4 g/kg)位于严家沟和向家营附近

在碾槽坝等地形成两个低值区(<0.9 g/kg);碱解氮高值区(>140 mg/kg)主要在万柏山和鲜家坪

低值区(<80 mg/kg)主要位于碾槽坝等地带;(2)随着距离的增加

城镇周围全氮先增加后减少

碱解氮逐渐减少;道路周围全氮没有变化

而碱解氮逐渐降低;宅基地周围全氮没有变化

而碱解氮逐渐增加;(3)不同类型、不同地貌区的城镇、道路和宅基地

对土壤氮含量的影响存在很大的区域差异;(4)不同的氮肥、磷肥和有机肥施用量对土壤氮含量影响不同

其中氮肥对碱解氮影响明显。[结论] 社会经济因素对土壤氮素的影响具有明显的区域差异性。

Abstract

[Objective] The spatial distribution patterns and socio-economic factors on soil nitrogen were studied in Shehong County of Sichuan Province.[Methods] Based on the random sampled soil nitrogen data

and social and economic data

geostatistics and spatial analysis of ArcGIS 9.3 were used.[Results] (1) the contents of soil total nitrogen(TN) and alkali hydrolyzable nitrogen(AHN) were 1.08±0.29 g/kg and 100.24±34.80 mg/kg respectively. The regions with highest value(>1.4 g/kg) of TN contents were mainly distributed in Yanjiagou and Xiangjiaying

the regions with lowest value(<0.9 g/kg) located in Niancaoba; The regions with highest value(>140 mg/kg) of AHN contents were mainly distributed in Wanbaishan and Xianjiaping

the regions with lowest value(<80 mg/kg) were mainly located in Niancaoba. (2) The TN contents increased firstly then decreased with the increase of distances around the towns

while the AHN contents reduced gradually; The TN contents were unchanged

while the AHN contents reduced gradually near roads; The TN contents were not changed

while the AHN contents were increased gradually in near by homesteads; (3) The contents of soil nitrogen were influenced greatly by the regional location around towns

roads and homesteads; (4) There were some differences of the contents of soil nitrogen for different nitrogenous fertilizer

phosphatic fertilizer and organic manure fertilizer

but the AHN contents were tightly tied to nitrogenous fertilizer.[Conclusion] To sum up

the impact of soil nitrogen of socio-economic factors had obvious regional difference.

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