摘要
【目的】从不同地貌区的角度探索新疆北疆地区土壤多样性分布特征,以及不同成土因素对土壤多样性特征的影响程度,为新疆地区土壤保护和农业可持续发展提供科学依据。【方法】引入中国二级地貌区划作为研究区划分依据,通过计算丰富度指数(P_(a))、多样性指数(H)、均匀度指数(E)分析北疆地区土壤多样性分布特征;利用地理探测器、种-面积曲线模型,分析不同地貌区的母质、植被、地形地貌、气温和降水对土壤多样性的影响强度。【结果】棕漠土、棕钙土、灰棕漠土为北疆地区主要土壤类型,不同地貌区面积与相应的P_(a)呈显著正相关;土壤H表现为天山高山盆地>阿尔泰亚高山>准噶尔盆地>新甘蒙丘陵平原,其中新甘蒙丘陵平原土壤多样性、均匀度指数均为最低。北疆地区影响因素分析显示,阿尔泰亚高山的降水、新甘蒙丘陵平原、准噶尔盆地和天山高山盆地的母质是影响土壤多样性的主要因素。【结论】北疆地区土壤沙漠化严重,土壤分布较为零散,各土壤类型面积差别较大,土壤环境和生态系统受到少数几种土壤影响;不同地貌区的母质、植被、地形地貌、气温和降水对土壤多样性的影响强度有所差异,但主要影响因素并未发生明显改变。
[Objective]Soil diversity is widely used to explore,quantify,and to compare the complexity of soil patterns in different units.This paper explores the distribution characteristics of soil diversity and the influence of different soil forming factors on soil diversity in Northern Xinjiang from the perspective of different geomorphic regions,providing scientific basis for Soil conservation and sustainable agricultural development in Xinjiang.[Method]This study introduces China’s secondary geomorphic regions as the basis for dividing the study area,and introduces relevant indicators such as Richness Index(P_(a)),Diversity Index(H),and Uniformity Index(E)to explore the characteristics of soil diversity in Northern Xinjiang in arid and semi-arid regions;Using geographic detectors,species area curve models,and moving window techniques,discuss and analyze the intensity of the impact of parent materials,vegetation,topography,temperature,and precipitation on soil diversity in different geomorphologic regions.[Result]The results showed that brown desert soil,brown calcium soil and gray brown desert soil were the main Soil type in Northern Xinjiang,and the area of different geomorphic regions was significantly positively correlated with the corresponding richness index;And the soil Diversity index is Tianshan Alpine Basin>Altai Mountains>The Junggar Basin>New Ganmeng Hilly Plain.The soil diversity and uniformity index in the New Ganmeng Hilly Plain are the lowest,indicating that the soil distribution in this area is relatively scattered,and the area of each soil type varies greatly.A few soils control the soil distribution in this area.The results of the factor detector show that in the Altai Mountains,the explanation level of precipitation for soil diversity is 8.96%,which is higher than other influencing factors.This indicates that the main influencing factor of soil diversity in the region is precipitation.For the New Ganmeng Hilly Plain,Tianshan Alpine Basin and the Junggar Basin,parent material is the main factor aff
作者
骆俊腾
范燕敏
武红旗
程军回
盛建东
杨睿
愿彬彬
LUO Jun-teng;FAN Yan-min;WU Hong-qi;CHENG Jun-hui;SHENG Jian-dong;YANG Rui;YUAN Bin-bin(School of Resources and Environment,Xinjiang Agricultural University,Urumqi 830052,China;Key Laboratory of Soil and Plant Ecological Processes,Urumqi 830052,China)
出处
《土壤通报》
CSCD
北大核心
2023年第6期1261-1270,共10页
Chinese Journal of Soil Science
基金
国家自然科学基金项目(32260280)资助。
