常见遥感干旱监测指标在哈萨克斯坦的一致性分析

Translated title of the contribution: Consistency and comparison among remote sensing drought indices and SMAP soil moisture in Kazakhstan

孙博, 钱静*, 陈曦, 邢秀为, 周启鸣

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

利用主被动微波卫星(SMAP)土壤含水量数据,从相同空间尺度上对比了全球在运行系统中3种常见遥感干旱指数[距平植被指数(AVI)、植被健康指数(VHI)、植被供水指数(VSWI)]在哈萨克斯坦农业干旱监测上的一致性。通过皮尔森相关系数(r)和肯德尔秩相关系数(τ),分别检验干旱指数与土壤含水量及其在干旱等级判断上的相关性,以评估遥感在哈萨克斯坦作物生长季中后期干旱监测中的适用性。结果表明:不同干旱指数在该地区一致性不高。基于植被状况的遥感干旱指数与土壤含水量相关性较低,而结合植被和地表温度的综合指数具有显著正相关。不同土层比较上,VSWI指数与作物根区(0~100cm)土壤含水具有较强相关性(r>0.6),表明其对植物生长季中后期的土壤含水状况有较好的响应能力。

Translated title of the contributionConsistency and comparison among remote sensing drought indices and SMAP soil moisture in Kazakhstan
Original languageChinese (Simplified)
Pages (from-to)663-670
Number of pages8
Journal干旱区研究
Volume37
Issue number3
DOIs
Publication statusPublished - 1 May 2020

Scopus Subject Areas

  • Atmospheric Science
  • Geology
  • Environmental Science (miscellaneous)
  • Ecology
  • Water Science and Technology

User-Defined Keywords

  • Kazakhstan
  • Remote sensing drought index
  • SMAP
  • Soil moisture
  • Validity test

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