第二章论述了民国时期西南地区森林面积、森林覆盖率的变化，分析了造成森林资源大量减少的原因，并揭示出森林破坏带来的严重后果。

The second chapter discusses the changes of the forest area and forest coverage, analyzes the reason of the decrease of forest resources, and reveals the serious consequences by forest destruction.

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关于森林资源变化动态分析得出：从1988年至1999年井冈山自然保护区的森林覆盖率从73.1%增长到85%；

The result showed that from 1988 to 1999, the forest coverage percentage was going up, from 73.1% to 85%;

youdao

关于森林资源变化动态分析得出：从1988年至1999年井冈山自然保护区的森林覆盖率从73.1%增长到85%；

The result showed that from 1988 to 1999, the forest coverage percentage was going up, from 73.1% to 85%;

youdao