Vegetation diversity protects against childhood asthma: results from a large New Zealand birth cohort
Vegetation diversity protects against childhood asthma: results from a large New Zealand birth cohort
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DOI：
10.1038/s41477-018-0151-8
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发表时间：
2018-06-01
期刊：
影响因子：
18
通讯作者：
Douwes, Jeroen
中科院分区：
文献类型：
--
作者：
Donovan, Geoffrey H.;Gatziolis, Demetrios;Douwes, Jeroen
我们评估了1998年出生的49956名新西兰儿童的自然环境与哮喘之间的关系，并使用常规收集的数据随访至2016年。生活在绿化地区的儿童，根据标准化植被指数的测量，患哮喘的可能性较小：标准化植被指数每增加1 sd，哮喘风险降低6.0% （95% CI 1.9-9.9%）。植被多样性也具有保护作用：儿童居住网块中自然土地覆盖类型数量增加1个百分点，风险降低6.7% （95% CI 1.5-11.5%）。然而，并非所有类型的土地覆盖都具有保护作用。非本地、低生物多样性土地覆盖类型的金雀花（Ulex europaeus）或外来针叶树覆盖面积每增加1 sd，哮喘风险分别增加3.2% （95% CI 0.0-6.0%）和4.2% （95% CI 0.9-7.5%）。结果表明，暴露于绿色和植被多样性可能对哮喘有保护作用。
We assessed the association between the natural environment and asthma in 49,956 New Zealand children born in 1998 and followed up until 2016 using routinely collected data. Children who lived in greener areas, as measured by the normalized difference vegetation index, were less likely to be asthmatic: a 1 s.d. increase in normalized difference vegetation index was associated with a 6.0% (95% CI 1.9-9.9%) lower risk of asthma. Vegetation diversity was also protective: a 1 s.d. increase in the number of natural land-cover types in a child's residential meshblock was associated with a 6.7% (95% CI 1.5-11.5%) lower risk. However, not all land-cover types were protective. A 1 s.d. increase in the area covered by gorse (Ulex europaeus) or exotic conifers, both non-native, low-biodiversity land-cover types, was associated with a 3.2% (95% CI 0.0-6.0%) and 4.2% (95% CI 0.9-7.5%) increased risk of asthma, respectively. The results suggest that exposure to greenness and vegetation diversity may be protective of asthma.