Conservation funding and change in per capita land consumption.

Conservation funding is the sum of all approved municipal, special district, and county ballot initiatives from 1990–2000, in nominal $, divided by the MSA population in 1990. Changes in per capita land consumption are measured as the difference between 1990 and 2000 per capita consumption, in developed area per person. Negative numbers indicate per capita land consumption declined over the decade. Statistically different groups are shown with different superscripts.

本数据集所涉及的保护资金，为1990年至2000年间所有获批的市级、特别区划及县级投票提案的总金额，以名义美元计价后，除以1990年大都市区统计区（Metropolitan Statistical Area，MSA）的总人口数。人均土地消耗变化量以1990年与2000年的人均建成区土地消耗量之差进行测算，单位为人均建成区面积；若数值为负，则表明该十年周期内人均土地消耗出现下降。具有统计学显著性差异的组别将以不同上标进行标注。