描述:
early defined the concept of ancient forestry literature,
understood its meaning and value of research and discussed the historical distribution and basic
characteristics of ancient Chinese forestry literature in the ancient books.
描述:
large-scale farming tool that can
water
continuously from the ground-surface water in the rivers, lakes, or pools, and is mainly applied to lifting
water to the high ground or drain water in the low-lying farmland. Due to the reason that the traditional
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:
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.