Erosion Susceptibility Classification (March 2018)

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. This dataset has been prepared to support the National Environmental Standard for Commercial Forestry. The ESC is used to identify the susceptibility of land to erosion which is used as the basis for setting resource consent requirements for various commercial forestry activities on different types of land. The ESC is based on the New Zealand Land Resource Inventory (NZLRI). The NES-CF WebApp is publicly accessible and can be found here: https://geospatial.mpi.govt.nz/NESCF侵蚀敏感性分类（Erosion Susceptibility Classification，ESC）可用于识别土地的侵蚀敏感性，既可为各类人工林经营活动设定监管阈值，也可作为不同类型土地上各类商业林业活动的资源许可审批要求的制定依据。该分类体系基于新西兰土地资源调查（New Zealand Land Resource Inventory，NZLRI）所关联的潜在与现状侵蚀数据分析，以及土地利用能力（Land Use Capability，LUC）单元的分类结果。本次修订将ESC的覆盖范围拓展至新西兰全境，调整了部分LUC单元的ESC等级，支持识别以沟蚀、暗沟侵蚀与泥流侵蚀为主导的ESC单元，并标注出所有包含8e类土地的多边形。本数据集的编制旨在支撑《商业林业国家环境标准（National Environmental Standard for Commercial Forestry，NES-CF）》的落地应用。NES-CF网络应用程序可公开访问，其网址为：https://geospatial.mpi.govt.nz/NESCF