[1]王志杰,柳书俊,喻理飞.草海流域景观结构与土壤保持功能时空动态特征[J].水土保持研究,2020,27(04):105-112.
　WANG Zhijie,LIU Shujun,YU Lifei.Characteristics of Temporal and Spatial Dynamic of Landscape Structure and Soil Conservation Function in Caohai Watershed[J].Research of Soil and Water Conservation,2020,27(04):105-112.
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草海流域景观结构与土壤保持功能时空动态特征

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 27 期数: 2020年04期 页码: 105-112 栏目: 目次 出版日期: 2020-06-20
Title:
Characteristics of Temporal and Spatial Dynamic of Landscape Structure and Soil Conservation Function in Caohai Watershed
文章编号:
1005-3409(2020)04-0105-08
作者:
王志杰1, 柳书俊2, 喻理飞1,3,4
(1.贵州大学 生命科学学院, 贵阳 550025; 2.贵州大学 茶学院, 贵阳 550025; 3.山地植物资源保护与种质创新省部共建教育部重点实验室, 贵阳 550025; 4.山地生态与农业生物工程协同创新中心, 贵阳 550025)
Author(s):
WANG Zhijie1, LIU Shujun2, YU Lifei1,3,4
(1.College of Life Sciences, Guizhou University, Guiyang 550025, China; 2.College of Tea Science, Guizhou University, Guiyang 550025, China; 3.Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region, Ministry of Education, Guiyang 550025, China; 4.Collaborative Innovation Center for Mountain Ecology & Agro-Bioengineering, Guiyang 550025, China)
关键词:
土壤侵蚀;  土壤保持功能;  景观结构;  InVEST模型;  草海流域
Keywords:
soil erosion;  soil conservation function;  landscape structure;  InVEST model;  Caohai watershed
分类号:
S157.1
文献标志码:
A
摘要:
为全面探明草海流域景观结构变化对其土壤侵蚀/土壤保持功能的影响,基于InVEST模型对草海流域2009年和2017年景观结构和土壤保持功能时空特征进行了定量分析和动态评估。结果表明:(1)草海流域2009—2017年景观类型均以耕地和水域为主,但景观结构发生明显变化,表现为耕地、水域、灌草地的减少和林地、沼泽地、建筑用地的增加。(2)2009—2017年草海流域实际土壤侵蚀强度呈加剧趋势,2009年和2017年单位面积潜在土壤侵蚀和实际土壤侵蚀分别为2 665.14,125.55 t/(hm2·a)和11 451.19,523.24 t/(hm2·a)。(3)2009—2017年草海流域及各景观类型的土壤保持量呈增加趋势,总体呈现“总体好转、局部恶化”的特征,2009年和2017年单位面积土壤保持量分别为2 539.60,10 927.94 t/(hm2·a),其中,灌草地土壤保持量增速最快,沼泽地增速最慢。因此,优化流域景观结构、降低人类活动干扰、增加植被覆盖有利于提升流域土壤保持服务功能。研究可为草海流域生态恢复与建设、流域空间规划提供理论基础和科学依据。
Abstract:
Caohai watershed is a typical watershed in Karst Plateau of China. In recent years, the landscape structure in Caohai watershed has been obviously changed due to strong human activities, and it has a significant impact on soil erosion/soil conservation in the watershed. To reveal the effect of landscape structure changes on soil erosion/soil conservation function in Caohai watershed, the spatial-temporal characteristics of landscape structure and soil conservation function in 2009 and 2017 were quantitatively analyzed based on InVEST model. The results showed that:(1)the landscape types of Caohai watershed were the cultivated land and water body from 2009 to 2007, and the landscape structure had changed significantly with the trend of the decrease of cultivated land, water body, irrigated grassland and the increase of forest land, swamp land and construction land;(2)the actual soil erosion intensity of Caohai watershed presented the increasing trend from 2009 to 2017, the potential soil erosion per unit area and the actual soil erosion in 2009 and 2007 were 2 665.14, 125.55 t/(hm2·a)and 1 1451.19, 523.24 t/(hm2·a), respectively;(3)the soil conservation amount of whole watershed and each landscape types displayed the increasing trend from 2009 to 2017 with the characteristics of ‘overall improvement and local deterioration'; the soil conservation amount per unit area in 2009 and 2017 was 2 539.60 t/(hm2·a)and 10 927.94 t/(hm2·a), respectively; the growth rate of soil conservation amount was the fastest for shrub grassland, and was the slowest for swamp land. Therefore, optimizing the landscape structure of the river basin, as well as decreasing the disturbance of human activities and increasing the vegetation coverage will be great beneficial to the improvement of soil conservation function in Caohai watershed. These results can provide theoretical and scientific basis for ecological restoration and construction and spatial planning of Caohai watershed.

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备注/Memo

收稿日期:2019-10-08 修回日期:2019-11-07
资助项目:国家自然科学基金(41701319); 贵州省科技支撑计划(黔科合支撑[2018]2854); 贵州省科技重大专项计划(黔科重大专项字[20163022-08号]); 贵州省科技重大专项(黔科合JZ字[2014]2002); 贵州省生物学一流学科建设项目(GNYL[2017]009)
第一作者:王志杰(1986—),男,甘肃会宁人,副教授,博士,主要从事区域与景观生态、土壤侵蚀研究。E-mail:zjwang3@gzu.edu.cn
通信作者:喻理飞(1963—),男,贵州贵阳人,教授,博士,主要从事喀斯特退化生态系统恢复研究。E-mail:gdyulifei@163.com

更新日期/Last Update: 2020-07-09