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针对去年冬季我省遇到了几十年罕见的极端低温，造成部分树种发生冻害现象，另外有的单位或个人盲目大量引进未经在我省试验成功的速生树种问题，我们在全省范围内展开调查。经调查、分析、评价，提出了我省西部平原区、中部低山丘陵区、东部高寒山区适宜发展的造林、绿化树种以及不适宜发展的树种。
Last winter, our province encountered decades of rare extreme low temperatures, resulting in some tree frost damage phenomenon, and some other units or individuals blindly introduced a large number of non-successful test in our province, the fast-growing tree species, we launched within the province survey. After investigation, analysis and appraisal, the afforestation and afforestation species suitable for development in the western plains area, hilly area in the middle part and the alpine mountainous area in the east were put forward, as well as unsuitable species for development.