Abstract: With the development of an agricultural economy, agricultural water demand has increased. The increased demand has resulted in extremely unbalanced development and utilization of surface and groundwater and has seriously ...

Abstract: The temporal-spatial distribution of agricultural water requirements constitutes an important basis for the optimal allocation of regional irrigation water resources. The primary crops (rice, maize, and soybeans) of 12 ...

Abstract: The evolution of the average freezing depth and maximum freezing depth of seasonal frozen soil and their correlations with the average winter half-year temperature in Heilongjiang Province in China are analyzed. Linear ...