嵊州市雷竹雪灾灾情分析与灾后恢复措施探讨

2008年1月中旬至2月上旬的连续低温雨雪天气造成严重的雪灾,使嵊州市3133 hm2雷竹林受到不同程度的影响,样地调查发现,雪灾造成雷竹林25.70%的母竹倾斜和折断;不钩梢竹林在雨雪过程中未采取摇雪处理的母竹倾斜和折断比例高达64.83%,采取摇雪处理的其比例仅为18.18%;钩梢竹林在雨雪过程中未采取摇雪处理的母竹倾斜和折断比例则下降为41.62%,采取摇雪处理的其比例则更低,仅为13.93%.表明在雷竹林经营过程中,钩梢对抵抗雪压效果明显,而在雨雪天气进行摇雪处理效果更为明显.受灾雷竹林2008年笋产量明显低于2007年,单位面积笋产量下降38.28%.通过对雷竹林受灾情况的分析,提出了雷竹灾后恢复技术措施.

Analysis on Effect of Snow Disaster on Phyllostachys praecox cv. Prevernalis Stand and Countermeasures

Snow disaster from January to February 2008 had great influence on Phyllostachys praecox cv.prevernalis stands with 3 133 hectares in Shengzhou,Zhejiang province.Sample plot investigations showed that 25.70% of mother bamboos inclined or break off.Bamboo stand without topping and shaking during snowing showed mother bamboo inclined and break off of 64.83%,that without topping but with shaking showed only of 18.18%.Stand with topping but without shaking during snowing showed mother bamboo inclined and break ...