新疆天山天池景区土壤磁学特征及其环境意义

发布时间：2018-01-20 05:53

  本文关键词： 土壤磁性 土壤污染 矿物类型 环境意义 天池景区 新疆　出处：《干旱区研究》2017年06期 　论文类型：期刊论文

【摘要】：以新疆天山天池景区为研究区,运用环境磁学方法,对景区内81个表土(0~10 cm)样品的磁学参数进行系统测定,分析土壤磁学特征及其环境指示意义。结果表明:(1)天池景区土壤磁性矿物含量适中;以亚铁磁性矿物(磁铁矿)为主导,同时伴有少量不完全反铁磁性矿物;土壤磁性矿物颗粒以稳定单畴(SSD)粗颗粒和超顺磁性(SP)颗粒混合组成,同时含有少量的多畴(MD)粗颗粒。(2)研究区表土磁性增强主要受自然成土过程和旅游活动影响;旅游活动区土壤亚铁磁性矿物含量高于未干扰区,土壤颗粒以较粗的SSD颗粒为主,SP颗粒含量相对少,表明旅游活动对景区土壤产生了一定影响,而未干扰区土壤磁性受自然成土过程影响较大。(3)磁性参数空间分布表明,土壤亚铁磁性矿物含量沿景区交通线、环湖的北部、西北部和西南部呈现相对高值,说明景区土壤主要受到旅游交通和专门服务设施活动的干扰。综合来看,土壤磁学方法能够初步圈定旅游干扰对景区土壤污染的程度及范围,可为天池景区土壤环境污染监测及决策部门进行旅游环境管理提供参考依据。
[Abstract]:The magnetic parameters of 81 topsoil (0 ~ 10 cm) samples in Tianchi Scenic area of Tianshan Mountain Xinjiang were systematically determined by environmental magnetics method. The characteristics of soil magnetism and its environmental significance were analyzed. The results showed that the content of magnetic minerals in Tianchi scenic spot was moderate. Ferromagnetic minerals (magnetite) are dominant, accompanied by a small amount of incomplete antiferromagnetic minerals; The soil magnetic mineral particles are composed of stable single domain SSDs coarse particles and superparamagnetic spp particles. The magnetic enhancement of surface soil in the study area is mainly affected by natural soil-forming process and tourism activity. The content of ferrous magnetic minerals in the soil of tourist activity area was higher than that in the undisturbed area, and the content of SP particles was relatively low in the coarse SSD particles, which indicated that tourism activities had a certain influence on the soil of scenic area. The spatial distribution of magnetic parameters of soil in undisturbed area is greatly affected by the natural soil-forming process. The results show that the content of soil ferromagnetic minerals is along the traffic line of scenic spot and the northern part of the lake. Northwest and southwest show relatively high values, indicating that the scenic area soil is mainly affected by tourism traffic and special service facilities activities. The method of soil magnetism can preliminarily delineate the extent and scope of soil pollution caused by tourism disturbance in scenic spots, and can provide a reference basis for the monitoring of soil environmental pollution in Tianchi scenic spot and the management of tourism environment by decision-making departments.
【作者单位】： 新疆师范大学地理科学与旅游学院;新疆干旱区湖泊环境与资源重点实验室;新疆大学资源与环境学院;
【基金】：国家自然科学基金项目(41461033,41161029) 新疆师范大学“十三五”校级重点学科地理学资助
【分类号】：S153.2;X53
【正文快照】： 旅游业的快速发展给社会经济带来巨大收益的同时,伴随着由旅游需求不断增加和景区数量与规模不断扩大带来的许多不利影响。游客的急剧增长需要消耗大量景区内外的食物、能源和生态资源,同时排放很多污染物,造成大气、水体、噪声和土壤污染以及植被景观格局变化等生态环境问题[，

本文编号：1447095