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当前位置: 首页 > 文章 > 黄土丘陵水蚀区生物结皮土壤抗冲性试验研究 西北林学院学报 2009,24 (3) 37-40+62
Position: Home > Articles > Experimental Study on the Soil Anti-scourability of Biological Crust in the Water Erosion Region in Loess Hilly Areas Journal of Northwest Forestry University 2009,24 (3) 37-40+62

黄土丘陵水蚀区生物结皮土壤抗冲性试验研究

作  者：
冉茂勇;赵允格;陈彦芹
单  位：
西北农林科技大学资源环境学院;西藏自治区职业技术学院;中国科学院水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室
关键词：
水蚀区;生物结皮;土壤抗冲性;黄土丘陵区
摘  要：
以典型黄土丘陵沟壑区不同发育年限的生物结皮为研究对象,探索了不同发育年限生物结皮对土壤有机质含量、水稳性团聚体含量、粘结力、容重等与土壤抗冲性有关的理化性质的影响,并与流水冲刷试验结果相结合,揭示水蚀条件下生物结皮的形成对土壤抗冲性的影响,明确生物结皮在研究区退耕还林(草)生态恢复中的地位及作用。结果表明:结皮形成对土壤有机质含量、水稳性团聚体含量、粘结力、容重均产生了影响。土壤抗冲性与结皮有机质含量、粘结力、水稳性团聚体含量呈负相关,与容重呈正相关。有机质含量对结皮土壤抗冲性影响最大,其次为粘结力、水稳性团聚体含量及土壤容重,其中有机质含量对土壤抗冲性的影响达到极显著水平,粘结力对土壤抗冲性的影响达显著水平。
译  名：
Experimental Study on the Soil Anti-scourability of Biological Crust in the Water Erosion Region in Loess Hilly Areas
作  者：
RAN Mao-yong1,2,ZHAO Yun-ge1,3,CHEN Yan-qin1 (1.College of Resources and Environment,Northwest A&F University,Yangling,Shaanxi 712100,China;2.Vocational College of Technology of Tibet Autonomous Region,Lhasa,Tibet 850000,China;3.State Key Laboratory of Soil Erosion and Dry-land Farming on the Loess Plateau,Institute of Soil and Water Conservation,Chinese Academy of Sciences,Yangling,Shaanxi 712100,China;)
关键词：
water erosion region;biological crust;soil anti-scourability;loess hilly areas
摘  要：
The effects of biological crusts formed in different development periods in the typical loess hilly and gully region on soil physicochemical properties related to soil anti-scourability,such as soil organic matter,aggregates,bond force,bulk density,were studied.The study was combined with the results of scouring experiment to reveal the effect of the formation of biological crust under water erosion conditions on soil anti-scourability,and make sure the function of biological crust in the process of converting cropland to forest and grassland and ecological restoration in the research area.The results were as follows: The formation of crust had effects on soil organic matter,aggregates,bond force,and bulk density.The soil anti-scourability had a negative correlation with crust organic matter,bond force and water-stable aggregates,and had a positive correlation with bulk density.Organic matter was the most influential factor of crust soil anti-scourability,the next was successively bond force,aggregates and soil bulk density.There was a very significant correlation between organic matter and soil anti-scourability,and the effect of bond force on soil anti-scourability reached a significant level.

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