描述:
th, the demand of water resource is
continuously increasing. That is to say water shortage has become a global problem. Water
resources carrying capacity is the basis and prerequisite of regional socio-economic development,
which is significant to realize the coordinated development of regional "water resources-
ecological environment-socio-economy" composite system. So it has become the focus and hot
topic in water science field nowdays.
描述:
society. The central
Shaanxi Province lies in the northwest inner-land, lacking in water resources. Although
there have been major farmland irrigation projects and perfect management system in
the Qin and Han Dynasty, the times of the Sui and Tang Dynasty, the situation of water
depletion could not be changed radically.
描述:
th, the demand of water resource is
continuously increasing. That is to say water shortage has become a global problem. Water
resources carrying capacity is the basis and prerequisite of regional socio-economic development,
which is significant to realize the coordinated development of regional "water resources-
ecological environment-socio-economy" composite system. So it has become the focus and hot
topic in water science field nowdays.
描述:
ogical characteristics of
the crops and people’s production and business activities, largely dominated by light,
heat, water, gas and other climatic factors.
描述:
ry of agricultural development in China has a
special significance. China introduced some of the new species, new technology and new
knowledge from the West to transform traditional agriculture and improve production
efficiency.