University of Wisconsin, Department of Entomology, Madison, Wisconsin, USA.
Int J Phytoremediation. 2011 Oct;13(9):845-58. doi: 10.1080/15226514.2011.552927.
Increased municipal solid waste generated worldwide combined with substantial demand for renewable energy has prompted testing and deployment of woody feedstock production systems that reuse and recycle wastewaters as irrigation and fertilization. Populus selections are ideal for such systems given their fast growth, extensive root systems, and high water usage rates. Maintaining ecological sustainability (i.e., the capacity for an ecosystem to maintain its function and retain its biodiversity over time) during tree establishment and development is an important component of plantation success, especially for belowground faunal populations. To determine the impact of solid waste leachate on soil micro- and meso-fauna, we compared soilfrom eight different Populus clones receiving municipal solid waste landfill leachate irrigation with clones receiving fertilized (N, P K) well water irrigation. Microfauna (i.e., nematodes) communities were more diverse in control soils. Mesofauna (i.e., insects) were associated with all clones; however, they were four times more abundant around trees found within the control plot than those that received leachate treatments. Nematode and insect abundance varied among Populus clones yet insect diversity was greater in the leachate-treated soils. Phytotechnologies must allow for soil faunal sustainability, as upsetting this balance could lead to great reductions in phytotechnology efficacy.
随着全球产生的城市固体废物增加，以及对可再生能源的巨大需求，促使人们对木本原料生产系统进行测试和部署，这些系统将废水作为灌溉和施肥进行再利用和回收。鉴于杨树生长迅速、根系广泛且耗水率高，因此非常适合此类系统。在树木建立和发展过程中保持生态可持续性（即生态系统在一段时间内保持其功能并保留其生物多样性的能力）是种植园成功的一个重要组成部分，特别是对于地下动物种群而言。为了确定固体废物渗滤液对土壤微小动物和中型动物的影响，我们比较了接收城市固体废物垃圾填埋渗滤液灌溉的八个不同杨树无性系的土壤和接收施肥（N、P、K）井水灌溉的无性系的土壤。对照土壤中的微小动物（即线虫）群落更加多样。中型动物（即昆虫）与所有无性系都有关联；然而，与接收渗滤液处理的无性系相比，在对照小区中发现的树木周围的昆虫数量多了四倍。线虫和昆虫的丰度在杨树无性系之间有所不同，但在接受渗滤液处理的土壤中，昆虫的多样性更大。植物修复技术必须允许土壤动物的可持续性，因为破坏这种平衡可能会导致植物修复技术的功效大大降低。
