ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
The Agricultural Drought Composite Monitoring Technique and Its Operational Application in Anhui Province
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Abstract:
Aiming at the operation and service demands of agricult ural drought in Anhui province, indices and methods of agricultural drought comp osite monitoring were studied by using agricultural drought indices that were ap plied for operation. These indices are soil moisture, accumulated humidity index , vegetation supply water index, period precipitation and precipitation days etc . The Analytic Hierarchy Price method was used to decide the weight of each fact or in the composite index. Four sequences of multifactor weight were determine d for clear sky and cloudy sky in the humid zone and semihumid zone, and coinc idence test were passed, corresponding composite models were established. T he grades of drought indices of four factors and five factors were confirmed. The composite models generally reflected moni toring results of each factor, which can give a synthetic judgment of drought si tuation and can be applied in the operational monitoring.
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