植物根系抗侵蚀指标及模型研究进展  

Progress of research on soil erosion resistance of plant roots and future prospects

作　　者：李强 杨俊诚 张加琼[2] 亢福仁[1] 高芸 张正 LI Qiang;YANG Jun-cheng;ZHANG Jia-qiong;KANG Fu-ren;GAO Yun;ZHANG Zheng(Yulin University/Shaanxi Key Laboratory of Ecological Restoration in Shaanbei Mining Area,Yulin 719000,China;State Key Labora⁃tory of Soil Erosion and Dryland Farming on the Loess Plateau/Institute of Soil and Water Conservation,CAS&MWR,Yangling 712100,China;Institute of Agricultural Resources and Regional Planing,CAAS,Beijing 100081,China)

机构地区：[1]榆林学院/陕西省陕北矿区生态修复重点实验室,陕西榆林719000 [2]中国科学院水利部水土保持研究所/土壤侵蚀与旱作农业国家重点实验室,陕西杨凌712100 [3]中国农业科学院农业资源与农业区划研究所,北京100081

出　　处：《农业资源与环境学报》2020年第1期17-23,共7页Journal of Agricultural Resources and Environment

基　　金：国家自然科学基金项目(41807521,41661101,41867015);国家重点实验室开放基金(A314021402-1801);陕西省青年科技新星人才计划项目(202057)~~

摘　　要：植物根系能显著抑制土壤侵蚀过程,实现固土护坡目标。随着植被重建进程的加快,表征根系抗侵蚀的指标和模型研究日趋合理完善。其中,根系指标选取集中反映在根系的形态特征和空间特征,而模型构建侧重理论型模型探索与修正。本文在综述植物根系抗侵蚀形态特征和空间特征指标及模型的基础上,发现目前应用的根系表征指标不能很好地关联根系形态特征和空间连接特征在坡面土壤抗侵蚀中的综合效应。为此,提出了"根系构架"的新概念,以期为坡面土壤侵蚀与植被配置的关系研究及模型参数优化提供一定的参考。Plant roots can significantly prevent soil erosion and aid in soil conservation and slope protection.With the rapid acceleration and advances in vegetation reconstruction the study of indicators and models of the root system′s resistance to soil erosion is becoming increasingly reasonable and accurate,especially in the context of morphological and spatial characteristics of root systems.However,current characterization indexes cannot accurately capture and correlate the comprehensive effects of root morphological characteristics and spatial linkage characteristics with soil erosion resistance.Therefore,based on the review of morphological characteristics,spatial characteristics,and models of soil erosion resistance of plant root system,a new concept of"root framework"was proposed in this paper.This is expected to provide a new reference for the study of the relationship between soil erosion and vegetation allocation on slope lands.

关 键 词：根系 土壤抗侵蚀 表征指标 研究进展 

分 类 号：Q944.3[生物学—植物学]