地球信息科学学报 ›› 2017, Vol. 19 ›› Issue (11): 1514-1521.doi: 10.3724/SP.J.1047.2017.01514

• 地理空间分析综合应用 • 上一篇    下一篇

基于权重线性加和模型的城市污泥土地利用适用性评估

崔锦霞1,3(), 余振华2,*(), 乔鹏炜3, 杨军3, 郑国砥3, 唐斌1, 王景云3   

  1. 1. 成都理工大学地球科学学院,成都 610059
    2. 常德市环境保护局,常德 415000
    3. 中国科学院地理科学与资源研究所 环境修复研究中心,北京 100101
  • 收稿日期:2017-05-03 修回日期:2017-08-03 出版日期:2017-11-10 发布日期:2017-12-08
  • 通讯作者: 余振华 E-mail:cuijinxia241@126.com;yzh144@163.com
  • 作者简介:

    作者简介:崔锦霞(1991-),女,山东潍坊人,硕士生,研究方向“3s”与数字国土。E-mail: cuijinxia241@126.com

  • 基金资助:
    国家自然基金面上项目“污泥堆肥过程中三氯生的降解转化规律及其环境风险研究”(41371455);国家重点研发计划项目“城镇污水污泥安全处置及同步资源能源回收”(2016YFC0401102)

Suitability Evaluation of Land Use of Municipal Sludge Based on Weighted Linear Combination

CUI Jinxia1,3(), YU Zhenhua2,*(), QIAO Pengwei3, YANG Jun3, ZHENG Guodi3, TANG Bin1, WANG Jingyun3   

  1. 1. College of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China
    2. Changde Municipal Environment Protection Bureau, Changde 415000, China
    3. Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
  • Received:2017-05-03 Revised:2017-08-03 Online:2017-11-10 Published:2017-12-08
  • Contact: YU Zhenhua E-mail:cuijinxia241@126.com;yzh144@163.com

摘要:

城市污泥土地利用的环境问题是限制其大规模利用的主要因素。本文建立基于权重线性加和模型的城市污泥土地利用环境风险控制方法,提出北京市城市污泥土地利用环境风险控制方案。不同因素对城市污泥施用的环境影响依次为:土壤重金属含量(0.22)>土地利用类型(0.17)≈土壤类型(0.17)≈自然降雨(0.17)>坡度(0.13)>与自然水体距离(0.09)>与城镇居民区距离(0.05)。北京市城市污泥低风险适宜施用区域主要集中在平谷和顺义交界处、昌平-延庆中部以及房山的东部山间林地,施用面积为2033 km2。中风险施用区分布在西南部、东南部的林地和旱地的混合区域,面积为5079 km2。高风险施用区面积为380 km2,分布在石景山以及门头沟东北部、房山西南部以及平谷北部区域。禁止施用区面积达8916 km2,主要分布在城区及城区周边的郊县、延庆、怀柔、密云等部分区域。

关键词: 权重线性加和模型, 污泥, 土地利用, 环境风险

Abstract:

Environmental problems caused by sewage sludge are the major limiting factor for its large-scale application. Based on weighted linear combination (WLC), an environmental risk control method for land use of urban sludge was established. Also, an environmental risk control scheme of urban sludge application was proposed in Beijing. Environmental effects of different factors of sludge application were quantified: soil heavy metal concentration (0.22) > land use type (0.17) ≈ soil type (0.17) ≈ natural rainfall (0.17) > slope (0.13) > distance from natural water (0.09) > distance from urban residents (0.05). High-suitable area for sludge application in Beijing is mainly located in the junction of Pinggu and Shunyi district, central region of Changping and Yanqing district, and mountain forest land in the eastern part of Fangshan district. The usage area of high-suitable region is 2033 km2. Moderate-suitable application area is located in southwest and southeast regions, where land types are woodlands and drylands. The usage area of moderate-suitable region is 5079 km2, and usage area of low-suitable area is 380 km2. Low-suitable area is located in Shijingshan, northeast of Mentougou, southwest of Fangshan, and north of Pinggu. The prohibited area is 8916 km2 and it is mainly distributed in urban areas, suburbs of the city, and some other districts such as Yanqing, Huairou and Miyun.

Key words: WLC, sewage sludge, land use, risk of pollution