MPI Erosion Susceptibility

The Erosion Susceptibility Classification (ESC) is used to identify the susceptibility of land to erosion and then to set regulatory thresholds for various plantation forestry activities. The ESC is based on the analysis of potential and present erosion data associated with the NZ Land Resource Inventory and classification of Land Use Capability (LUC) units. This revision extends the ESC to cover all of New Zealand, revises the ESC class of some LUC units, allows identification of ESC units dominated by gully, tunnel gully and earthflow erosion, and identifies all polygons containing class 8e land. For more information visit: https://www.mpi.govt.nz/forestry/national-environmental-standards-plantation-forestry/fish-spawning-indicator侵蚀敏感性分类（Erosion Susceptibility Classification，ESC）用于识别土地遭受侵蚀的敏感性，并据此为各类人工林经营活动设定监管阈值。该分类体系基于对关联新西兰土地资源清查（NZ Land Resource Inventory）的潜在与现存侵蚀数据的分析，以及土地利用能力（Land Use Capability，LUC）分级单元的分类结果构建。本次修订将ESC的覆盖范围拓展至新西兰全境，修订了部分LUC单元的ESC等级，新增了以冲沟、隧道式冲沟及土流侵蚀为主导的ESC单元识别功能，并标注出所有包含8e级土地的多边形区域。如需获取更多信息，请访问：https://www.mpi.govt.nz/forestry/national-environmental-standards-plantation-forestry/fish-spawning-indicator