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当前位置: 首页 > 文章 > 甘肃泾川不同林龄人工刺槐林的土壤水分-物理特性及渗透性研究 四川农业大学学报 2017 (2) 193-198
Position: Home > Articles > Soil Hydrological Characteristics of Different Age Artificial Robinia pseudoacacia Forests in the Gully Area Loess Plateau of Eastern Gansu Journal of Sichuan Agricultural University 2017 (2) 193-198

甘肃泾川不同林龄人工刺槐林的土壤水分-物理特性及渗透性研究

作  者：
景贯阳;邸利;王安民;史再军;牟极;吴贤忠
单  位：
泾川县官山林场;甘肃农业大学资源与环境学院;平凉市水土保持科学研究所
关键词：
林龄;孔隙度;持水性;渗透性;刺槐林;陇东黄土高原
摘  要：
【目的】通过对人工刺槐林的土壤水分-物理性质及渗透性进行分析,评估陇东黄土高原泾川县中沟小流域人工刺槐林土壤水文功能,为该地区生态恢复工程建设和流域水土资源管理提供理论参考。【方法】采用环刀法测定不同林龄(20、25、30和35 a)人工刺槐林的土壤水分-物理性质及渗透性。【结果】在0~100 cm土层,不同生长阶段刺槐林土壤容重(g/cm3)均值变化大小依次表现为:25 a(1.330)>30 a(1.253)>20 a(1.170)>35 a(1.161);35 a生样地土壤的饱和蓄水量、毛管蓄水量及最小蓄水量均最大,25 a生样地的最小;4种林龄刺槐林土壤初渗速率的变化范围为2.045~4.718 mm/min,35 a生刺槐林土壤初渗速率最大,且不同林龄间的变化规律与土壤非毛管孔隙度的变化规律基本一致。【结论】35 a生刺槐林的土壤持水能力与渗透性较好,20 a和30 a生次之,25 a生最差。
译  名：
Soil Hydrological Characteristics of Different Age Artificial Robinia pseudoacacia Forests in the Gully Area Loess Plateau of Eastern Gansu
作  者：
JING Guan-yang;DI Li;WANG An-min;SHI Zai-jun;MU Ji;WU Xian-zhong;College of Resources and Environmental Science, Gansu Agricultural University;Institute of Soil and Water Conservation of Pingliang;Guanshan Forest Farm of Jingchuan County;
关键词：
age;;porosity;;water holding capacity;;permeability;;Robinia pseudoacacia forests;;Loess Plateau of Eastern Gansu
摘  要：
【Objective】The objective of the study was to evaluate soil hydrological characteristics of artificial Robinia pseudoacacia forests by measuring soil moisture physical properties and permeability. This study also aimed to provide some theoretical reference for soil resource management in the Zhonggou small watershed of Loess Plateau of Jingchuan,Gansu.【Method】Soil moisture,physical properties and permeability of different ages(20 a,25 a,30 a and 35 a)R. pseudoacacia plantations were measured by cutting ring method.【Results】In the 0~100 cm soil layer,the order of mean soil bulk density was 25 a>30 a>20 a>35 a. the 35 a plantatioin was the largest but the 25 a plantatioin was the smallest in saturated soil water content,capillary water capacity and minimum storage capacity. The initial soil infiltration rate was 2.045~4.718 mm/min. There was similar variation in soil infiltration rate,soil non-capillary porosity.【Conclusion】The results indicated that the 35 a plantation was the best with respect to soil water holding capacity and permeability,followed by the 20 a,whereas the 25 a was the worst.

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