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中国农学通报 ›› 2017, Vol. 33 ›› Issue (22): 79-85.doi: 10.11924/j.issn.1000-6850.casb16110017

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

黄土高原煤炭开采对小流域植被动态变化的影响

肖俊伟,毕如田,荆耀栋,高阳   

  1. 山西农业大学资源环境学院,山西农业大学资源环境学院,山西农业大学资源环境学院,山西农业大学资源环境学院
  • 收稿日期:2016-11-03 修回日期:2017-03-03 接受日期:2017-03-07 出版日期:2017-08-21 发布日期:2017-08-21
  • 通讯作者: 毕如田
  • 基金资助:
    国土资源部公益性行业项目“北方村庄压煤山丘区土地综合整治技术研究”(201411007)。

Coal Mining: Impact on Vegetation Variation in Watershed in Loess Plateau ——A Case for Changhe Basin in Jincheng

  • Received:2016-11-03 Revised:2017-03-03 Accepted:2017-03-07 Online:2017-08-21 Published:2017-08-21

摘要: 研究旨在结合RS与GIS,对采煤扰动下长河流域植被的动态演变趋势及相关特征进行研究,以期为长河流域生态环境的恢复和保护提供一定参考。基于1987—2015 年多期TM影像数据,采用像元二分模型估算长河流域植被覆盖度,运用最大值合成法、稳定性分析法等对长河流域近30 年来植被覆盖度的时空变化特征进行了分析。结果表明:(1)近30 年长河流域植被稳定性由东西往中部梯度递增,总体稳定性较高,矿区植被稳定性较差;(2)长河流域植被在近30 年里存在普遍退化的趋势,59.9%的区域植被趋于退化,2007 年后研究区植被情况略有好转,植被退化面积较之前减少了1.9%;(3)长河流域植被整体上具有显著的空间集聚性,形成了4 个主要的集聚特征。近30 年中,高-高值集聚的区域内的植被呈明显的动态增加,低-低值集聚区的植被增加不明显。研究发现,长河流域植被在变化趋势和空间分布上有明显的差异性,为完善小流域植被动态监测理论体系奠定了基础。

关键词: 番茄, 番茄, 控释肥, 养分释放特征, 根系生长, 产量, 品质

Abstract: The study aims to analyze the dynamic variation characteristics of vegetation under mining disturbance in Changhe Basin combining with RS and GIS, so as to provide some references for the restoration and protection of ecological environment. Based on multi TM images from 1987 to 2015, the dichotomous model was used to estimate vegetation coverage of Changhe Basin and the MAC method and stability analysis were adopted to analyze the spatial and temporal variation characteristics of vegetation coverage in recent 30 years. The results showed that: (1) the vegetation stability of Changhe Basin in recent 30 years gradually increased from the eastern and western part to the central part and the general stability was high, but the vegetation stability of mining area was low; (2) the vegetation of Changhe Basin had a general degradation trend, 59.9% of the vegetation had a tendency to degenerate; after 2007, the vegetation condition of the study area was slightly improved, of which vegetation degradation area was 1.9% less than before; (3) the vegetation coverage of Changhe Basin had a significant spatial agglomeration and similar vegetation coverage values formed 4 major clustering features. The vegetation in region of high- high- value agglomeration showed a significant dynamic increase from 1987 to 2015, and the increase of low-low-value agglomeration was not obvious. The results show that the vegetation in Changhe Basin has significant variance in change trend and spatial distribution, and the study can provide a foundation for improving the theoretical system of vegetation dynamic monitoring in small watershed.

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