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Cumulative effects of fragmentation and development on highly productive land in New Zealand
New Zealand Journal of Agricultural Research ( IF 1.8 ) Pub Date : 2021-05-05 , DOI: 10.1080/00288233.2021.1918185
Fiona Curran-Cournane 1 , Sam Carrick 2 , Michelle G. Barnes 3 , Anne-Gaelle Ausseil 4 , John J. Drewry 3 , Isaac A. Bain 5 , Nancy E. Golubiewski 1 , Haydon S. Jones 6 , James Barringer 2 , Lance Morell 7
Affiliation  

ABSTRACT

Land fragmentation is a growing issue in New Zealand, however, no consistent or regular national monitoring has been established. A methodology for assessing land fragmentation was applied nationally for the first time, revealing that the greatest proportion of fragmentation occurred on land used for diffuse rural residence (>0.40 to ≤2.0 ha) and small parcels (>2.0 to ≤8.0 ha) with a 128% and 73% increase, respectively, between 2002 and 2019. In New Zealand, the most highly productive land (Land Use Capability (LUC) class 1, 2 and 3) is most impacted by continued fragmentation with 38%, 28% and 17% of baseline area, respectively, occupied by medium sized parcels or smaller (≤40.0 ha) with a dwelling in 2019. Impacts were greatest for Auckland with 40%, 44% and 25% of the region’s LUC 1, 2 and 3 land, respectively, occupied by small sized parcels or smaller with a dwelling, increasing to 64%, 67% and 47%, respectively, when including parcels ≤ 40.0 ha. Protection of LUC class 1 and 2 land, particularly, requires national attention. This metric provides an opportunity to evaluate land fragmentation and development over time that could serve both the assessment of policy performance and environmental reporting at national and regional levels.



中文翻译:

碎片化和开发对新西兰高产土地的累积影响

摘要

新西兰的土地分割是一个日益严重的问题,但是,尚未建立一致或定期的国家监测。首次在全国范围内应用了土地破碎化评估方法,表明最大比例的破碎化发生在分散式农村住宅用地(>0.40 至≤2.0 公顷)和小块土地(>2.0 至≤8.0 公顷) 2002 年至 2019 年分别增长了 128% 和 73%。在新西兰,生产力最高的土地(土地利用能力 (LUC) 1 级、2 级和 3 级)受持续碎片化的影响最大,分别为 38%、28% 和2019 年分别有 17% 的基线面积被中等规模或更小的地块(≤40.0 公顷)和住宅占据。奥克兰的影响最大,分别占该地区 LUC 1、2 和 3 土地的 40%、44% 和 25% , 分别,当包括小于等于 40.0 公顷的地块时,被小型地块或更小的住宅占用,分别增加到 64%、67% 和 47%。LUC 1 类和 2 类土地的保护尤其需要国家关注。该指标提供了一个机会来评估随着时间的推移土地分割和开发,可以在国家和区域层面为政策绩效评估和环境报告服务。

更新日期:2021-05-05
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