1984—2019年广西土壤pH演变特征  

The evolution characteristics of soil pH in Guangxi in 1984-2019

作　　者：李金梅 黄梅 康吉利 刘文奇 侯显达 王铄今 贾书刚 刘书田 侯彦林 LI Jinmei;HUANG Mei;KANG Jili;LIU Wenqi;HOU Xianda;WANG Shuojin;JIA Shugang;LIU Shutian;HOU Yanlin(Guangxi Geographical Indication Crops Research Center of Big Data Mining and Experimental Engineering Tech-nology,Nanning Normal University,Nanning 530001,China;Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation,Nanning Normal University,Nanning 530001,China;Key Laboratory of Environment Change and Resources Use in Beibu Gulf of Ministry of Education,Nanning Normal University,Nanning 530001,China;School of Geography and Planning,Nanning Normal University,Nanning 530001,China;Guangxi Soil Fertilizer Workstation,Nanning 530007,China)

机构地区：[1]南宁师范大学广西地标作物大数据工程技术研究中心,南宁530001 [2]南宁师范大学广西地表过程与智能模拟重点实验室,南宁530001 [3]南宁师范大学北部湾环境演变与资源利用教育部重点实验室,南宁530001 [4]南宁师范大学地理科学与规划学院,南宁530001 [5]广西壮族自治区土壤肥料工作站,南宁530007

出　　处：《生态学杂志》2024年第11期3317-3323,共7页Chinese Journal of Ecology

基　　金：广西一流学科(地理学)建设经费;广西八桂学者专项经费(侯彦林);北部湾环境演变与资源利用教育部重点实验室开放课题(CTEUKLOP-X1704)资助。

摘　　要：土壤酸化使土壤生产能力下降。为探究1984—2019年期间广西土壤pH变化情况,采用地统计学、动态度和分布指数等方法,分析项目采样点数据及2010—2019年的长期观测数据。结果表明:1984—2019年,广西土壤pH下降,由不均匀分布演变为相对连续的片状分布;土壤pH等级面积占比为等级2>等级3>等级4>等级1>等级5>等级6;土壤pH以等级2和等级3为主,1984年占76.71%,2019年占84.84%;在变化速度方面,等级1(-1.99%)和等级5(0.44%)的变化最为迅速,动态度为等级1>等级6>等级5>等级2>等级3>等级4;在不同高程区,等级6的pH分布指数曲线波动显著。Soil acidification reduces productivity.To explore the changes of soil pH in Guangxi between 1984 and 2019,geostatistics,dynamic degree and distribution index were used to analyze the sampling point data of the pro-ject and the long-term observation data from 2010 to 2019.The results showed that soil pH decreased from 1984 to 2019,and its distribution changed from uneven to relatively continuous.The area proportion of soil pH grade was as follows:grade 2>grade 3>grade 4>grade 1>grade 5>grade 6.The soil pH was mainly composed of grade 2 and grade 3.The area of grade 2 and grade 3 accounted for 76.71%of total area in 1984 and 84.84%in 2019.In terms of change rate,grade 1(-1.99%)and grade 5(0.44%)showed the most rapid change.The dynamic degree was following an order of grade 1>grade 6>grade 5>grade 2>grade 3>grade 4.The pH distribution index curve of grade 6 fluctuated significantly across different elevation regions.

关 键 词：土壤酸碱度 时空演变 地统计学 广西 

分 类 号：S153.4[农业科学—土壤学]