神东矿区干旱空间异质性及其环境驱动机制

邵天意; 李文华; 包斯琴; 王 楠

引用本文:	邵天意,李文华,包斯琴,等.神东矿区干旱空间异质性及其环境驱动机制[J].灌溉排水学报,2023,():-.
	shaotianyi,liwenhua,baosiqin,et al.神东矿区干旱空间异质性及其环境驱动机制[J].灌溉排水学报,2023,():-.

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神东矿区干旱空间异质性及其环境驱动机制
邵天意,李文华,包斯琴,等
1.内蒙古农业大学沙漠治理学院;2.内蒙古地理信息中心;3.中国地质大学（北京）

摘要:

神东矿区地处干旱、半干旱地区，受地理环境及煤炭开采的影响，域内水土流失严重、长期缺水、地表支离破碎、生态环境脆弱。【目的】研究其干旱空间异质性及采煤塌陷对干旱的影响，能够为该地区生态环境改善精准施策提供参考。【方法】本文基于温度干旱植被指数(TVDI)模型表征研究区2002-2018年植被生长季(5-10月)地表干旱状况，明确地理环境因子对干旱的空间异质作用，掌握干旱对采煤活动的响应规律。【结果】结果表明:2002-2018年均TVDI呈持续下降态势，研究区西南部干旱程度大于东北部。降水、归一化植被指数(NDVI)、土壤类型为影响干旱程度的主要地理环境因子，双因子交互作用能增强单因子对干旱空间异质性的解释力。塌陷区TVDI均值＞非塌陷区TVDI均值。

关键词: 干旱;温度干旱植被指数(TVDI);时空变化;空间异质性;神东矿区

DOI：10.13522/j.cnki.ggps.2023333

分类号:S165.2

基金项目:内蒙古自治区科技重大专项课题(ZDZX2018058)

Spatial variation in drought and its determining factors in Shendong mining region

shaotianyi¹, liwenhua², baosiqin³, wangnan⁴

1.Inner MongoliaAgricultural University;2.Inner Mongolia Geographic Information Center;3.Inner Mongolia Agricultural University;4.China University of Geosciences(Beijing)

Abstract:

Shendong Mining Area is located in arid and semi-arid region, affected by geographical environment and coal mining, the soil and water loss in the region is serious, the water shortage is long-term, the surface is fragmented and the ecological environment is fragile. 【Objective】The study on the spatial heterogeneity of drought and the influence of coal mining activities on drought can provide reference for the accurate policies to improve the ecological environment in this region. 【Method】In this paper, the temperature arid vegetation index (TVDI) model was used to characterize the surface drought conditions during the vegetation growing season (May to October) from 2002 to 2018 in the study area, to clarify the spatial heterogeneity of geographic environmental factors on drought, and to grasp the response rule of drought to coal mining activities.【Result】 The results showed that TVDI continued to decline from 2002 to 2018, and the drought degree in the southwest of the study area was greater than that in the northeast. Precipitation, normalized vegetation index (NDVI) and soil type were the main geographic environmental factors affecting drought degree. The interaction of two factors could enhance the explanatory power of single factor on spatial heterogeneity of drought. TVDI of subsidence area was higher than that of non-subsidence area.

Key words: Drought; Temperature drought vegetation index (TVDI); Spatio-temporal variation; Spatial heterogeneity; Shendong mining area