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首页> 外文会议>Biennial Southern Silvicultural Research Conference >Effects of a severe ice storm on mature loblolly pine stands in north Mississippi
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Effects of a severe ice storm on mature loblolly pine stands in north Mississippi

机译：严重冰暴在北密西西比成熟的荒漠化松树中的影响

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On 9 February 1994, a severe winter storm deposited an estimated 7.5-12.5 cm of precipitation as ice across north Mississippi. Among the stands damaged in this storm were three old-field pine plantations between 40 and 50 years of age. These standshad been scheduled for experimental cutting In the summer of 1994, and had received 100-percent inventories in the fall of 1993. We quantified the damage in the stands by repeating the inventory after the storm. Ice damage was assessed using six damage categories, including (1) no damage, (2) branch breakage, (3) bending, (4) breakage within the crown, (5) breakage below live crown, and (6) uprooting. Of the 1,577 trees on the three watersheds, only 241 (15 percent) were undamaged. Undamaged trees wereprimarily small pines and hardwoods. The most severe forms of damage-broken stems and uprooting-affected 76 percent of the trees. On a percentage basis, pines were more often and more seriously damaged than hardwoods, and large trees were more often damaged than small trees. We therefore expect hardwoods to increase in importance over the next 10 years.
机译：1994年2月9日，严重的冬季风暴估计为北密西西比境内估计为7.5-12.5厘米的降水。在这场风暴中损坏的立场是40至50岁之间的三个旧场杉木种植园。这些立式于1994年夏季计划进行实验切割，并于1993年秋季获得了100％的库存。我们通过在风暴之后重复库存来量化待机的损坏。使用六种伤害类别评估冰损伤，包括（1）损坏，（2）分支破损，（3）弯曲，（4）在冠内的破损，（5）下面的活冠下降，和（6）拔除。在三个流域上的1,577棵树中，只有241（15％）未被损坏。未损坏的树木是小的松树和硬木。最严重的伤害破裂茎和拔除的树木损伤的树木。百分比基础，松树比硬木更频繁，更严重受损，大树比小树更常见。因此，我们期望硬木在未来10年内增加重要性。

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