土壤食物网调控及其生态功能研究的困境与思考

土壤食物网精准调控是探究和发挥土壤生物生态功能的关键和难点.综述了已有的土壤食物网直接和间接调控方法,讨论了土壤食物网生态功能研究现状及面临的困境,如常用的直接调控措施很难在野外大规模应用;间接调控土壤食物网内在机制复杂,调控效果不易把控;土壤食物网全图模糊不清,关键类群及其权重难确定;土壤食物网的物质循环与能流难量化...

Soil food web manipulation and ecological functions: Challenges and perspectives

Precision manipulation of soil food web is a critical point for exploring and enhancing the ecological functions of soil biota.In this study,we outline the current approaches to soil food web manipulation,discuss the present status and challenges of studies on the ecological functions of soil food web.The direct manipulation methods are limited in field application.Alternatively,soil food web could be indirectly manipulated but the manipulation consequences are likely not consistent due to the complexity of interactions.The figure of soil food web is still vague;the key stone taxa of soil food web and their contribution weights are difficult to be recognized;and finally the material cycling and energy flow in soil food web are not fully quantified.We suggest to explore the solutions from four dimensions:1) developing field technique systems for monitoring both soil food web and related ecological processes;2) developing simple and practicable techniques for field manipulation of soil food web;3) focusing on the soil food web-sphere;4) performing soil food web-related integrated studies of multiple scales,multiple factors and multiple processes.