文献类型：期刊文献

中文题名：环境友好型保水材料对土壤水分特征的影响及评价

英文题名：Effects of Environment-Friendly Water-retaining Materials on Soil Moisture Characteristics of Soil and the Evaluation

作者：侯美娟[1] 蔚阿龙[1] 丛日春[1]

第一作者：侯美娟

机构：[1]中国林业科学研究院生态保护与修复研究所,北京100091

年份：2022

卷号：35

期号：6

起止页码：177-186

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；

基金：国家重点研发计划重点专项项目(冬奥廊道沿线植被景观优化及生态功能提升技术集成创新与应用示范)(2019YFF0303200)。

语种：中文

中文关键词：环境友好型保水材料;土壤水分特征曲线;土壤水分有效性;综合评价

外文关键词：environment-friendly water-retaining material;soil water characteristic curve;soil water availability;comprehensive evaluation

分类号：S152.7;S156.2

摘要：[目的]探究环境友好型保水材料对土壤水分特征的影响。[方法]选用岩棉、生物炭和炭棉3种环境友好型保水材料与聚丙烯酸钠盐型、丙烯酰胺-丙烯酸钾聚合型、聚丙烯酸钾盐型3种传统保水材料及CK对比研究。以沙土为基质,按不同质量比与各种保水材料均匀混合,通过控水试验,分别测定保水材料土壤水分动态曲线和水分特征曲线,分析保水材料对土壤水分特性的影响并进行评价。[结果]环境友好型保水材料均能降低土壤密度,增加土壤孔隙度和持水量。其中10%炭棉对各持水参数都有显著影响。自然干旱条件下,与CK相比,各保水材料均能有效抑制土壤水分蒸发。在40 d时间内,10%炭棉在整个失水过程中保持水分的效果最好,干旱胁迫40 d后,10%炭棉比CK组含水量高3.37%。6种保水材料均能提高土壤有效水含量,由多到少排序为T_(3)>N>H>T_(2)>S_(3)>S_(2)>D_(3)>K>D_(2)>S_(1)>T_(1)>D_(1)>CK,其中10%炭棉处理的土壤有效含水量最高。[结论]通过主成分分析和隶属函数法综合评价得出,环境友好型保水材料中10%炭棉保水效果最好。
[Objective]To explore the influence of environment-friendly water-retaining materials on soil moisture characteristics.[Methods]Three environment-friendly water-retaining materials,porous fiber cotton,biochar and carbon cotton,were selected and compared with three traditional water-retaining materials,sodium polyacrylate,acrylamide-potassium acrylate and potassium polyacrylate.Sandy soil was taken as the matrix and mixed with various water-retaining materials at different mass ratios,and CK.By the method of water control experiment,the dynamic curves of soil moisture and soil water characteristic of each water-retaining material were measured,respectively.And the influence of water-retaining materials on soil water characteristics was analyzed.[Results]The environment-friendly water-retaining materials could reduce soil bulk density and increase soil porosity and water holding capacity.Among them,10%carbon cotton in soil had a significant effect on the water holding parameters.Under the condition of natural drought,all water-retaining materials could restrain soil water evaporation more effectively than CK.During 40 days,10%carbon cotton retained the most moisture throughout the water loss process.After 40 days of drought stress,the water content of 10%cotton was 3.37%higher than that of CK group.All of the six water-retaining materials could increase the soil effective water content.The soil effective water content in the material T_(3) had the largest,followed by N,H,T_(2),S_(3),S_(2),D_(3),K,D_(2),S_(1),T_(1),D_(1),CKof which 10%cotton treated soil effective water content was the most.[Conclusion]Through the comprehensive evaluation of principal component analysis and membership function method,10%carbon cotton has the best water retention effect among environment-friendly water retention materials.