Dynamic Variation of the Magnitude of Edge Influence of the Coupling of Soil Temperature and Moisture on Cultivated Grassland-cropland Boundary in Guizhou Province

doi:10.11733/j.issn.1007-0435.2017.02.012

Acta Agrestia Sinica ›› 2017, Vol. 25 ›› Issue (2): 303-309.DOI: 10.11733/j.issn.1007-0435.2017.02.012

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Dynamic Variation of the Magnitude of Edge Influence of the Coupling of Soil Temperature and Moisture on Cultivated Grassland-cropland Boundary in Guizhou Province

WANG Jian-li¹, HAO Jun¹, YANG Feng², LIU Hong-lai¹, CHENG Wei¹, CHEN Chao¹

1. College of Animal Science, Guizhou University, Guiyang, Guizhou Province 550025, China;
2. Guizhou Extension Station of Grassland Technology, Guiyang, Guizhou Province 550025, China

Online:2017-04-15 Published:2017-06-25

贵州人工草地-农田界面土壤水热耦合影响域动态变化研究

王建立¹, 郝俊¹, 杨丰², 刘洪来¹, 程巍¹, 陈超¹

1. 贵州大学动物科学学院, 贵州贵阳 550025;
2. 贵州省草地技术试验推广站, 贵州贵阳 550025

通讯作者: 陈超,E-mail:gzgyxgc@163.com
作者简介:王建立(1992-),女,布依族,硕士研究生,主要从事草地生态与管理方面研究,E-mail:wjl_kangta@163.com
基金资助:
国家自然科学基金项目（31560670）；贵州省科技厅项目（黔科合NY字[2012]3011号）；贵州大学研究生创新基金项目（研农2016020）资助

Abstract

Abstract:

This study aimed to quantify the spatial variation characteristics of soil temperature and moisture, and to determine the dynamic variation of the magnitude of edge influence of the coupling of soil temperature and moisture on cultivated grassland-cropland boundary in Guizhou province. Results showed that the soil moisture of grassland in four seasons was 60.7%±0.31,23.6%±0.20,19.7%±0.20 and 70.4%±0.19, respectively, which was higher than that in cropland area; Soil temperature in grassland was lower than in cropland in summer and autumn, but it was completely opposite in winter and spring; Magnitude of seasonal edge boundary of cultivated grassland-cropland were 25 m, 28 m, 34 m and 29 m, respectively, and the changes showed a "narrow-wide-narrow" trend. The one-sided results caused by the single factor may be avoided by using the coupling of these two factors to determine the edge influence of boundary.

Key words: Cultivated grassland-cropland boundary, Magnitude of edge influence, Moving splid-window technology, The coupling of soil temperature and moisture

摘要：

通过对贵州人工草地-农田界面表层土壤（0~20 cm）的调查采样和室内分析，明确界面土壤水分和温度的空间变化特征，利用水分和温度双因素耦合来判定界面影响域，探讨其季节性动态变化过程。结果表明：人工草地土壤水分四季分别为60.7%±0.31，23.6%±0.20，19.7%±0.20和70.4%±0.19，均高于农田的34.5%±0.52，11.8%±0.23，10.0%±0.19和64.1%±0.13；土壤温度空间变化表现为夏秋季节草地低于农田，冬春季节草地高于农田；贵州农田-人工草地界面四季土壤水热耦合影响域处于一个动态变化的过程，呈现为“窄-宽-窄”的规律；四季界面影响域宽度分别为25，28，34和29 m。利用双因素耦合判定界面影响域能够在一定程度上避免单因素判定造成的“偏向性”结果。

关键词: 人工草地-农田, 界面影响域, 移动窗口法, 水热耦合

CLC Number:

S152.7

WANG Jian-li, HAO Jun, YANG Feng, LIU Hong-lai, CHENG Wei, CHEN Chao. Dynamic Variation of the Magnitude of Edge Influence of the Coupling of Soil Temperature and Moisture on Cultivated Grassland-cropland Boundary in Guizhou Province[J]. Acta Agrestia Sinica, 2017, 25(2): 303-309.

王建立, 郝俊, 杨丰, 刘洪来, 程巍, 陈超. 贵州人工草地-农田界面土壤水热耦合影响域动态变化研究[J]. 草地学报, 2017, 25(2): 303-309.

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Dynamic Variation of the Magnitude of Edge Influence of the Coupling of Soil Temperature and Moisture on Cultivated Grassland-cropland Boundary in Guizhou Province

贵州人工草地-农田界面土壤水热耦合影响域动态变化研究

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