干旱区生态环境知识资源中心(Arid): 祁连山东部冰沟河流域景观格局与河流水化学特征关系

Arid

	祁连山东部冰沟河流域景观格局与河流水化学特征关系
其他题名	Relationship between landscape pattern and hydrochemical characteristics of Binggou River Basin in eastern Qilian Mountains
	周俊菊 1; 向鹃 1; 王兰英 2; 种国双 3; 朱国锋 1; 魏伟 1; 冯炜 1; 黄美华 1
来源期刊	生态学杂志
ISSN	1000-4890
出版年	2019
卷号	38 期号:12 页码:3779-3788
中文摘要	以2016年9月冰沟河流域的土地利用数据和河流水化学数据为基础,以河水采样点为中心分别建立三种尺度的缓冲区,运用Fragstats 4.2软件计算景观指数,再采用冗余分析方法分析不同尺度下的景观格局与水化学特征关系。结果表明:流域内不同土地利用/覆被类型对河流水化学特征的影响存在差异,耕地和建设用地的增加会在一定程度上促使主要水化学元素向河水中汇集,草地对水化学元素起到固持作用,水域和荒漠具有稀释作用,上游地区林地与水化学特征主要表现为正相关关系;该流域内,斑块密度、景观分离度和斑块连通性指数在200 m和600 m尺度下对水化学特征具有较好的指示意义;1000 m缓冲区尺度下的面积加权平均斑块分维数及600 m尺度下的景观形状指数与水化学特征关系更符合客观规律;香农多样性指数在中下游600 m缓冲区尺度下对水化学特征具有更高的解释度。本研究结果揭示了祁连山区生态水文过程,为土地的合理利用和景观格局的优化提供了科学依据。
英文摘要	Based on the data of land use and hydrochemistry of river water in the Binggou River Basin in September 2016,buffers at three scales were established by the center of the water sampling points.The landscape index was calculated by Fragstats 4.2.The relationship between landscape pattern and hydrochemistry at different scales was analyzed by redundant analysis method.The results showed that different land use /cover types had different effects on chemical characteristics of river water.Increased area of farmland and construction land promoted the major chemical elements to be converged into river water.Grassland retained water chemical elements,whereas water area and desert had dilution effects.Forest land was positively related to water chemical characteristics in the upper reaches.Patch density,landscape division index,and patch cohesion index were good indicators for water chemistry at the scale of 200 m and 600 m in the Binggou River Basin.The relationships of the area-weighted patch fractal dimension at 1000 m buffer scale and the landscape shape index at 600 m scale with the water chemistry characteristics accorded with the objective law.The Shannons diversity index at the 600 m buffer scale in the middle and lower reaches of this basin could better indicate water chemistry characteristics.Our results revealed the ecological hydrological processes in the Qilian Mountains and thus provide reference for the rational use of land and the optimization of landscape pattern.
中文关键词	景观格局 ; 水化学 ; 冗余分析 ; 冰沟河流域
英文关键词	landscape pattern hydrochemistry redundancy analysis Binggou River Basin
语种	中文
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:6625185
来源机构	西北师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/316135
作者单位	1.西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国; 2.中国21世纪议程管理中心, 北京 100381, 中国; 3.中国科学院生态环境研究中心;;中国科学院大学, 城市与区域生态国家重点实验室;;, ;;, 北京;;北京 100049;;100049, 中国
推荐引用方式 GB/T 7714	周俊菊,向鹃,王兰英,等. 祁连山东部冰沟河流域景观格局与河流水化学特征关系[J]. 西北师范大学,2019,38(12):3779-3788.
APA	周俊菊.,向鹃.,王兰英.,种国双.,朱国锋.,...&黄美华.(2019).祁连山东部冰沟河流域景观格局与河流水化学特征关系.生态学杂志,38(12),3779-3788.
MLA	周俊菊,et al."祁连山东部冰沟河流域景观格局与河流水化学特征关系".生态学杂志 38.12(2019):3779-3788.