Agricultural Land Classification detailed Post 1988 survey ALCB10189a

Survey name:Exeter, Monkerton, Harts Lane
Post 1988 Agricultural Land Classification (ALC) site survey data – scanned original paper maps and survey reports for individual sites surveyed in detail between 1989 and 1999 by the Ministry of Agriculture Fisheries and Food. Where Grade 3 is mapped this includes the subdivision of Grade 3 into subgrades 3a and 3b. Surveys use the current grading methodology as described in "Agricultural Land Classification of England and Wales. Revised guidelines and criteria for grading the quality of agricultural land (MAFF, 1988)":http://webarchive.nationalarchives.gov.uk/20130402151656/http:/archive.defra.gov.uk/foodfarm/landmanage/land-use/documents/alc-guidelines-1988.pdf. Individual sites have been mapped at varying scales and level of detail from 1:5,000 to 1:50,000 (typically 1:10,000). Unedited sample point soils data and soil pit descriptions are also available for some surveys.
Attribution statement: © Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right [year].

调查名称：埃克塞特、莫克顿、哈茨巷
1988年后农业用地分类（ALC）现场调查数据——对1989年至1999年间由农业、渔业与食物部进行的详细调查的各个现场的原版纸质地图和调查报告进行扫描。当绘制了第3级分类时，包括将第3级细分为子级3a和3b。调查采用《英格兰和威尔士农业用地分类。修订的指南和评定农业用地质量的标准》（MAFF，1988年）中描述的当前评定方法。各个现场以不同的比例尺和详细程度进行了绘制，比例尺从1:5,000至1:50,000（通常为1:10,000）。部分调查还提供了未经编辑的样本点土壤数据和土壤坑描述。
归属声明：© 自然英格兰版权。包含军用地形数据©皇家版权和数据库权利[年份]。