石漠化区雨季不同植被类型土壤水分温度动态变化及两者关系  

Dynamic Changes of Soil Moisture Temperature and Relationship between Different Vegetation Types in Rocky Desertification Region during Rainy Season

作　　者：赵爽 余军林 罗娅[1] 石春茂 刘洋 ZHAO Shuang;YU Junlin;LUO Ya;SHI Chunmao;LIU Yang(School of Geography and Environmental Science,Guizhou Normal University,Guiyang 550025,China;Guizhou Institute of Water Resources Science,Guiyang 550025,China)

机构地区：[1]贵州师范大学地理与环境科学学院,贵阳550025 [2]贵州省水利科学研究院,贵阳550025

出　　处：《节水灌溉》2023年第5期10-16,共7页Water Saving Irrigation

基　　金：国家自然科学基金委员会“贵州省人民政府喀斯特科学研究中心项目”(U18112401);贵州省普通高等学校科技拔尖人才支持计划项目(黔教合KY[2018]042);贵州省科技计划项目(黔科合支撑[2020]4Y016);贵州省2019年度哲学社会科学规划重点课题(19GZZD07);贵州省水利科技项目(2020ZC01);贵州省水利科技经费项目(KT202108)。

摘　　要：为研究花江石漠化区雨季人工林和天然林土壤水分和土壤温度状况,运用原位监测方法和一般统计学方法分析顶坛花椒(Zanthoxylum bungeanum.)、复羽叶栾树(Koelreuteria bipinnata)和构树(Broussonetia papyrifera)的土壤水分和土壤温度动态变化及两者关系。结果表明:①土壤水分含量均值呈顶坛花椒(34.7%)>复羽叶栾树(33.8%)>构树(33.4%),土壤温度均值呈构树(29.3℃)>复羽叶栾树(27.9℃)>顶坛花椒(27.3℃);顶坛花椒、复羽叶栾树、构树土壤水分含量变异系数分别是:0.13、0.15、0.13,土壤温度变异系数分别是0.04、0.04、0.07。②顶坛花椒、复羽叶栾树、构树各层土壤水分与土壤温度的皮尔逊相关系数如下,0~5 cm:0.275、0.468、0.441,5~10 cm:0.307、0.474、0.462,10~20 cm:0.165、0.450、0.398,20~40 cm:0.181、0.405、0.520;除顶坛花椒10~20 cm和20~40 cm负相关不显著,其他都具有显著负相关(P<0.01)。顶坛花椒土壤水分含量较复羽叶栾树和构树高,时间变异小,受土壤温度影响最小,具有较好的水分保持效益,可继续作为石漠化治理的优选树种加以培育和管理。In order to study the soil moisture and soil temperature of plantations and natural forests in the rainy season in the rocky desertification area of Huajiang River,the dynamic changes of soil moisture and soil temperature of Zanthoxylum bungeanum,Koelreuteria bipinnata.and Broussonetia papyrifera were analyzed by in situ monitoring and general statistical methods.The results showed that:①the mean soil moisture content was Zanthoxylum bungeanum(34.7%)>Koelreuteria bipinnata.(33.8%)>Broussonetia papyrifera(33.4%).The mean soil temperature was Broussonetia papyrifera(29.3℃)>Koelreuteria bipinnata(27.9℃)>Zanthoxylum bungeanum(27.3℃).The variation coefficients of soil moisture content of Zanthoxylum bungeanum,Koelreuteria bipinnata and Broussonetia papyrifera were 0.13,0.15,0.13,respectively.The variation coefficients of soil temperature content were 0.04,0.04,0.07,respectively.②Pearson correlation coefficients between soil moisture and soil temperature in different layers of Zanthoxylum bungeanum,Koelreuteria multipinnatifida and Broussonetia papyrifera were as follows:0.275,0.468,0.441,respectively,for 0~5 cm;0.307,0.474,0.462,respectively,for 5~10 cm;0.165,0.450,0.398,respectively,for 10~20 cm;0.181,0.405,0.520,respectively,for 20~40 cm;except for 10~20 cm and 20~40 cm of Zanthoxylum bungeanum,there were a significant negative correlation(P<0.01).The conclusions is as follows:Zanthoxylum bungeanum has higher soil moisture content,less time variability and least influence by soil temperature than Koelreuteria bipinnata and Broussonetia papyrifera.It has better soil moisture conservation benefits and can continue to be cultivated and managed as the best tree species for controlling rocky desertification.

关 键 词：雨季 土壤水分 土壤温度 植被 土层 石漠化区 

分 类 号：S715.3[农业科学—林学] S152