PDI模型能够有效地反映地表覆盖和水热组合，简单实用，具有通用性和普适性，适宜于复杂下垫面条件下的遥感旱情监测。
PDI has many advantages such as simplicity, practicality, easy-to-useage, versatility and universality. And it is suitable to monitor regional drought under complex underlying surface conditions.
PDI模型能够有效地反映地表覆盖和水热组合，简单实用，具有通用性和普适性，适宜于复杂下垫面条件下的遥感旱情监测。
PDI has many advantages such as simplicity, practicality, easy-to-useage, versatility and universality. And it is suitable to monitor regional drought under complex underlying surface conditions.
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