IMHE OpenIR  > 山地灾害与地表过程重点实验室
基于GIS 和RUSLE 模型的万州区土壤保持服务功能空间分布特征
Alternative TitleSPATIAL DISTRIBUTION CHARACTERISTICS OF SOIL CONSERVATION SERVICE IN WANZHOU DISTRICT BASED ON GIS AND RUSLE MODEL
陆传豪1,2; 代富强3; 刘刚才1
Corresponding Author代富强
2017
Source Publication长江流域资源与环境
ISSN1004-8227
Volume26Issue:8Pages:1228-1236
Abstract

土壤保持服务是重要的生态系统服务之一,代表生态系统对土壤侵蚀所起到的削减和改善作用。以万州为研究区,基于GIS平台和修正通用土壤流失方程 (RUSLE) ,运用降雨、DEM等数据建模,探讨万州区土壤保持服务功能的空间分布特征并分析其影响因素。结果显示: (1)万州区土壤保持总量为1 435. 84 * 10~5 t /a,单位面积年均土壤保持量为417. 91 t / (hm~2·a) ,具有较高的土壤保持服务功能重要性; (2)土壤保持服务空间分布受地形和人类活动等的显著影响,东南部山地区域较高,而铁峰山与方斗山之间的长江河谷较低,其空间分布特征与土壤侵蚀的分布状况大致相反; (3)坡度角度,15° ~ 25°坡度区产沙量最大占全区的41. 56%,8° ~ 15°区域次之,这两个坡度区人地矛盾最为集中;土地利用类型中,旱地侵蚀最为强烈,而林地侵蚀微弱并表现出很高的土壤保持服务功能。研究结果对万州乃至整个三峡库区的水土保持工作有借鉴意义。

Other Abstract

Soil conservation service is one of the most important ecosystem services,which represents the positive function of ecosystem to reduce soil erosion. Data from WanZhou District including precipitation, soil characteristics,DEM et al.,based on revised universal soil loss equation (RUSLE) and GIS method was used to investigate the spatial distribution characteristics of soil conservation service. and the influencing factors. The results showed that the total soil conservation capacity and mean soil conservation capacity were 1 435. 84*10~5 t / a and 417. 91 t / (hm~2 ·a) ,indicating a great significance of soil conservation service. In further,spatial distribution of soil conservation service was mainly influenced by terrain and human activities. Soil conservation was high in southeastern mountain area,and low in the Yangtze river valley between Tiefeng mountain and Fangdou mountain,; while soil erosion showed the opposite spatial distribution characteristics. A slope of 15-25 degree owned the largest erosion,contributing 41. 57% of the total erosion amount,and a slope of 8-15 degree ranked the second,with concentrated contradiction between human and land. In terms of land type,dry land region was the main source of erosion,and woodland area showed high soil conservation service. There is a strong need for changing land use and taking measures such as returning farmland to forest to improve the level of soil conservation service. The results can give support to control soil erosion and improve soil conservation service in Wanzhou District and Three Gorges Reservoir area.

Keyword万州区 土壤侵蚀 土壤保持 时空分布 影响因素
Subject AreaS157
DOI10.11870 /cjlyzyyhj201708013
Indexed ByCSCD ; 北大中文核心
Language中文
CSCD IDCSCD:6060106
Funding Organization国家自然科学基金面上项目(41471232) ; 国家自然科学资助项目“雅鲁藏布江河谷区农户种植生计下耕地土壤肥力质量的时空变化特征”(41301351) ; 重庆市教委科技项目“三峡水库屏障区生态系统服务功能非线性耦合机理与调控模拟研究”(KJ1600611)
Citation statistics
Cited Times:3[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/20626
Collection山地灾害与地表过程重点实验室
Affiliation1.中国科学院水利部成都山地灾害与环境研究所
2.中国科学院大学
3.重庆工商大学旅游与国土资源学院
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
陆传豪,代富强,刘刚才. 基于GIS 和RUSLE 模型的万州区土壤保持服务功能空间分布特征[J]. 长江流域资源与环境,2017,26(8):1228-1236.
APA 陆传豪,代富强,&刘刚才.(2017).基于GIS 和RUSLE 模型的万州区土壤保持服务功能空间分布特征.长江流域资源与环境,26(8),1228-1236.
MLA 陆传豪,et al."基于GIS 和RUSLE 模型的万州区土壤保持服务功能空间分布特征".长江流域资源与环境 26.8(2017):1228-1236.
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