基于空间聚类分层抽样的黄骅市县域耕地质量等别监测样点布设
杨江燕, 殷守强, 张利, 门明新, 陈影

The layout of county area cultivated land quality monitoring samples in Huanghua City based on spatial clustering stratified sampling
Jiangyan YANG, Shouqiang YIN, Li ZHANG, Mingxin MEN, Ying CHEN
表3 黄骅市不同抽样方法布设耕地质量监测样点数量在各耕地等别中的分布
Table 3 Distribution of cultivated land quality monitoring sample number by different sampling methods in different cultivated fields in Huanghua
耕地等别 耕地面积/km2 空间聚类分层抽样样点
布设数量/个
等别分层抽样样点
布设数量/个
简单随机抽样样点
布设数量/个
网格分层抽样样点
布设数量/个
10 593.45 55 42 63 50
11 69.94 10 13 12 10
7 21.71 5 5 1 1
8 8.14 1 3 0 4
9 176.41 10 8 5 16
总计 869.64 81 81 81 81