ABSTRACT The hazards associated with land use in karst terrain are widely recognised but those associated with forest operations on karst have received relatively little attention. The Tasmanian Forest Practices Code, first introduced in 1987, specifies that natural values in karst terrain are protected and managed during forest operations. Consequently, planning of operations on plantations in karst terrain requires detailed documentation and mapping of the karst features (chiefly sinkholes and caves) present. Planning by Forest Practices Officers, working with geoscientists at the Forest Practices Authority (FPA), has generally ensured that karst features have been avoided at planting, but because karst is an active process, prescriptions to protect karst in first rotations may need to be upgraded in Forest Practices Plans (FPPs) produced for later rotations. Experience gained in both pre-Code and post-Code plantations led the FPA to develop new guidelines for forest operations on karst. Instead of classifying sinkholes on their basis of their size and genesis, the guidelines classify them pragmatically into three categories—passive, active and recent—broadly related to perceived risk of further collapse and runoff-filtering capacity and apply appropriate management prescriptions for each category. Incorporation of these prescriptions into FPPs ensures risk-related management for karst features and reduces hazards for machinery operators and forest managers. The guidelines can be applied by foresters and forest planners trained in geomorphic processes and could be applied more broadly in karst terrain.

中文翻译：

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在喀斯特地形上管理塔斯马尼亚人工林的地貌值

摘要 与岩溶地形土地利用相关的危害已得到广泛认可，但与岩溶森林作业相关的危害相对较少受到关注。塔斯马尼亚森林实践守则于 1987 年首次推出，规定在森林经营期间保护和管理喀斯特地区的自然价值。因此，在喀斯特地形中规划种植园的运营需要详细记录和绘制当前喀斯特特征（主要是落水洞和洞穴）的地图。森林实践官员的规划与森林实践管理局 (FPA) 的地球科学家合作，通常确保在种植时避免岩溶特征，但由于岩溶是一个积极的过程，可能需要在为以后的轮作制定的森林实践计划 (FPP) 中升级在第一次轮作中保护岩溶的规定。在规范前和规范后种植园中获得的经验促使 FPA 为喀斯特森林作业制定了新的指导方针。该指南没有根据它们的大小和成因对天坑进行分类，而是将它们实际地分为三类——被动的、主动的和最近的——与进一步崩溃的感知风险和径流过滤能力广泛相关，并为每个类别应用适当的管理处方。将这些规定纳入 FPP 可确保对岩溶特征进行风险相关管理，并减少机械操作员和森林管理者的危害。