ZHANG Pengfei,WANG Rongrong,DAI Yanyan,et al.Soil Moisture Availability and Soil Desiccation Under Different Vegetation Conditions in Yuci, Shanxi[J].Research of Soil and Water Conservation,2022,29(05):192-198.
山西榆次不同植被土壤水分有效性与干燥化效应
- Title:
- Soil Moisture Availability and Soil Desiccation Under Different Vegetation Conditions in Yuci, Shanxi
- 文章编号:
- 1005-3409(2022)05-0192-07
- Keywords:
- different vegetation types; soil desiccation level; soil moisture availability; distribution pattern of soil moisture; Yuci District of Shanxi Province
- 分类号:
- S152.7+5
- 文献标志码:
- A
- 摘要:
- 为了对山西省山区土壤干旱程度和水资源利用情况进行研究,通过称重法研究了山西榆次区不同植被(樱桃林地、耕地、枣树林地和杨树林地)及撂荒地土壤剖面水分变化特征、水分有效性及干燥化效应。结果表明:土壤平均含水量从小到大依次为杨树林地(8.10%)、枣树林地(9.94%)、撂荒地(10.70%)、樱桃林地(14.47%)和耕地(14.53%)。各植被下土层均有不同程度的干层发育,其中耕地和樱桃林地土壤为轻度干层,撂荒地主要为中度干层,而枣树林地与杨树林地则发育了中重度干层。杨树林地各土层均为无效水,枣树林地以无效水为主,撂荒地以无效水与难效水为主,耕地和樱桃林地受灌溉补给,以难效水与中效水为主。各植被中除杨树林地外,土壤水分含量均随土层深度增加先减后增。其中樱桃林地和枣树林地土壤水分都在0—3 m内呈递减趋势,3—5 m土壤水分迅速升高。耕地和撂荒地土壤含水量先减后增,均在2—2.5 m深度土层为含水量低值拐点。杨树林地土壤水分在0—3.5 m保持平稳,3.5—5 m水分呈下降趋势。
- Abstract:
- Yuci District is located on the eastern side of the Loess Plateau, perennial drought and little rain and higher evaporation. It is very important for regional ecological construction to explore the vegetation soil moisture and desiccation level in this region. The soil moisture content was measured by weighing method by collecting soil profile samples with a lightweight manual drill. The characteristics and desiccation effects of soil moisture in vertical profiles under different vegetation conditions(cherry forest, cultivated land, jujube forest and poplar forest)and wasteland in Yuci were studied. In addition, the availability of soil moisture and desiccation level under different vegetation conditions were evaluated. There were different levels of desiccation development in the five plantations, the poplar forest land showed the thickest dry layer(3.1 m), followed by jujube forest land(2.8 m), wasteland(2.1 m), cherry forest land(2.4 m)and cultivated land(1.5 m). The soil moisture was in the following order: cultivated land(14.53%)>cherry forest land(14.47%)>wasteland(10.70%)>jujube forest land(9.94%)>poplar forest land(8.10%). The cultivated land and cherry forest developed slightly dry layer, and the wasteland was mainly mediumdry layer, but the jujube and poplar forest land developed the moderate and heavy dry layer. For the soil moisture availability, the most of soil moisture in cultivated land and cherry forest land were low availability, soil moisture in wasteland was low availability and no availablity, while jujube and poplar forest land were no availability. Except for poplar forest land, the soil moisture of the other plantations decreased first and then increased with the increasing of soil depth. The soil moisture of cherry forest and jujube forest showed a decreasing trend within 0—3 m, and increased rapidly within 3—5 m. The distribution pattern of soil moisture in cultivated land and wasteland also decreased first and then increased, with the lowest value of soil moisture in 2—2.5 m depth. The distribution pattern of soil moisture in poplar forest was stable at first and then decreased, the soil moisture remained stable between 0 m and 3.5 m, and decreased between 3.5 m and 5 m. In all vegetation conditions of Yuci District, the dry layer developed, and the soil moisture availability was low availability and no availability. In cherry forest and cultivated land, irrigation should be maintained and increased to prevent the dry layer development, and to improve the availability of soil moisture. The soil moisture of jujube and poplar forest land were seriously insufficient, in order to ensure the sustainable utilization of soil moisture and the normal water cycle in this region, jujube and poplar forests can improve the soil moisture utilization efficiency by decreaseing density, pruning and proper irrigation.
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备注/Memo
收稿日期:2021-07-24 修回日期:2021-08-05
资助项目:山西省留学人员科研资助项目(2020-138); 山西省高等学校哲学社会科学项目(2019W116); 山西省哲学社会科学规划课题(2019B375; 2020YY207); 山西省高等学校科技创新项目(2019L0781)
第一作者:张鹏飞(1983—),男,山西柳林人,副教授,博士,研究方向:农业水资源。E-mail:zhangpf66@163.com
通信作者:赵景波(1953—),男,山东滕州人,教授,博士,研究方向:区域环境。E-mail:zhaojb@snnu.edu.cn