Meshblock 2023

This dataset is the definitive version of the annually released meshblock boundaries as at 1 January 2023 as defined by Stats NZ. This version contains 57,539 meshblocks, including 16 with empty or null geometries (non-digitised meshblocks). Stats NZ maintains an annual meshblock pattern for collecting and producing statistical data. This allows data to be compared over time. A meshblock is the smallest geographic unit for which statistical data is collected and processed by Stats NZ. A meshblock is a defined geographic area, which can vary in size from part of a city block to a large area of rural land. The optimal size for a meshblock is 30–60 dwellings (containing approximately 60–120 residents). Each meshblock borders on another to form a network covering all of New Zealand, including coasts and inlets and extending out to the 200-mile economic zone (EEZ) and is digitised to the 12-mile limit. Meshblocks are added together to build up larger geographic areas such as statistical area 1 (SA1), statistical area 2 (SA2), statistical area 3 (SA3), and urban rural (UR). They are also used to define electoral districts, territorial authorities, and regional councils. Meshblock boundaries generally follow road centrelines, cadastral property boundaries, or topographical features such as rivers. Expanses of water in the form of lakes and inlets are defined separately from land. Meshblock maintenance Meshblock boundaries are amended by: 1. Splitting – subdividing a meshblock into two or more meshblocks. 2. Nudging – shifting a boundary to a more appropriate position. Reasons for meshblock splits and nudges can include: ·to maintain meshblock criteria rules. ·to improve the size balance of meshblocks in areas where there has been population growth ·to maintain alignment to cadastre and other geographic features. ·Stats NZ requests for boundary changes so that statistical geography boundaries can be moved ·external requests for boundary changes so that administrative or electoral boundaries can be moved ·to separate land and water. Mainland, inland water, islands, inlets, and oceanic are defined separately Meshblock changes are made throughout the year. A major release is made at 1 January each year with ad hoc releases available to users at other times. While meshblock boundaries are continually under review, 'freezes' on changes to the boundaries are applied periodically. Such 'freezes' are imposed at the time of population censuses and during periods of intense electoral activity, for example, prior and during general and local body elections. Meshblock numbering Meshblocks are not named and have seven-digit codes. When meshblocks are split, each new meshblock is given a new code. The original meshblock codes no longer exist within that version and future versions of the meshblock classification. Meshblock codes do not change when a meshblock boundary is nudged. Meshblocks that existed prior to 2015 and have not changed are numbered from 0000100 to 3210003. Meshblocks created from 2015 onwards are numbered from 4000000. Digitised and non-digitised meshblocks The digital geographic boundaries are defined and maintained by Stats NZ. Meshblocks cover the land area of New Zealand, the water area to the 12mile limit, the Chatham Islands, Kermadec Islands, sub-Antarctic islands, offshore oil rigs, and Ross Dependency. The following 16 meshblocks are not held in digitised form. Meshblock Location (statistical area 2 name) 0016901 Oceanic Kermadec Islands 0016902 Kermadec Islands 1588000 Oceanic Oil Rig Taranaki 3166401 Oceanic Campbell Island 3166402 Campbell Island 3166600 Oceanic Oil Rig Southland 3166710 Oceanic Auckland Islands 3166711 Auckland Islands 3195000 Ross Dependency 3196001 New Zealand Economic Zone 3196002 Oceanic Bounty Islands 3196003 Bounty Islands 3196004 Oceanic Snares Islands 3196005 Snares Island 3196006 Oceanic Antipodes Islands 3196007 Antipodes Islands Generalised version This generalised version has been simplified for rapid drawing and is designed for thematic or web mapping purposes. Macrons Names are provided with and without tohutō/macrons. The column name for those without macrons is suffixed ‘ascii’. Digital data Digital boundary data became freely available on 1 July 2007.本数据集为新西兰统计局（Stats NZ）定义的、截至2023年1月1日的年度发布统计地块（meshblock）边界正式版本。本版本共包含57539个统计地块，其中16个几何信息为空或为null（未数字化统计地块）。 新西兰统计局每年都会更新统计地块体系，用于收集和编制统计数据，这使得不同时期的数据具备可比性。统计地块是新西兰统计局收集和处理统计数据的最小地理单元。统计地块为划定的地理区域，其面积范围从城市街区的一部分到大片农村土地不等，理想规模为30至60处住宅（对应约60至120名居民）。 所有统计地块彼此接壤，形成覆盖新西兰全境的网络，包括海岸和海湾，并延伸至200海里专属经济区（EEZ），且数字化范围至12海里海域界限。统计地块可合并为更大的地理区域，例如统计区域1（SA1）、统计区域2（SA2）、统计区域3（SA3）以及城乡分类（UR）。此外，统计地块还可用于划定选举选区、地方当局辖区及地区议会管辖范围。 统计地块边界通常遵循道路中心线、地籍产权边界或河流等地形特征。湖泊和海湾等水域区域与陆地区域分别划定。 统计地块维护：统计地块边界的修正方式包括以下两种：1. 拆分——将一个统计地块划分为两个或多个新的统计地块；2. 微调——将边界调整至更合适的位置。 统计地块拆分与微调的原因包括： · 维持统计地块的判定规则； · 针对人口增长区域，优化统计地块的规模平衡性； · 保持与地籍及其他地理要素的对齐； · 新西兰统计局提出的边界变更请求，以调整统计地理边界； · 外部提出的边界变更请求，以调整行政或选举边界； · 分离陆域与水域区域。 新西兰本土、内陆水域、岛屿、海湾及远洋区域均分别划定。统计地块的调整工作全年持续开展，每年1月1日发布正式大版本，其余时间可向用户提供临时更新版本。 尽管统计地块边界始终处于审查状态，但会定期实施边界变更冻结。此类冻结通常在人口普查期间及选举活动密集期实施，例如大选及地方选举前后及选举期间。 统计地块编号：统计地块无名称，仅采用7位数字编码。当统计地块被拆分时，每个新生成的统计地块将获得新的编码，原编码在该版本及后续版本的统计地块分类中不再生效。仅微调边界的统计地块，其编码保持不变。2015年之前存在且未发生变更的统计地块，编码范围为0000100至3210003；2015年起新增的统计地块，编码起始于4000000。 数字化与非数字化统计地块：数字化地理边界由新西兰统计局定义并维护。统计地块覆盖新西兰陆地面积、12海里海域以内的水域、查塔姆群岛、克马德克群岛、亚南极群岛、近海石油钻井平台以及罗斯属地（Ross Dependency）。以下16个统计地块未提供数字化形式： 0016901 远洋 克马德克群岛 0016902 克马德克群岛 1588000 远洋 塔拉纳基海域石油钻井平台 3166401 远洋 坎贝尔岛 3166402 坎贝尔岛 3166600 远洋 南地大区海域石油钻井平台 3166710 远洋 奥克兰群岛 3166711 奥克兰群岛 3195000 罗斯属地 3196001 新西兰专属经济区 3196002 远洋 邦蒂群岛 3196003 邦蒂群岛 3196004 远洋 斯奈尔斯群岛 3196005 斯奈尔斯群岛 3196006 远洋 安蒂波德斯群岛 3196007 安蒂波德斯群岛 简化版本：本简化版本为快速绘图而优化，适用于专题制图或网络地图制作。 长音符号：地名同时提供带毛利语长音符号（tohutō/macrons）和不带长音符号的版本，不带长音符号的列名后缀为"ascii"。 数字化数据：统计地块的数字化边界数据于2007年7月1日起免费开放。