excessive firewood consumption caused the vegetation system deterioration, the unbalance of species in each oasis system, appearing as various differences in the residents' firewood structure.
薪柴高消费引起各绿洲植被系统质量劣化,植被系统物种失衡,表现为垦区之间居民薪柴结构存在多种差别。
firewood consumption makes up 30 percent of aggregate timber consumption on the upper-middle reaches of yangtze and yellow rivers.