干旱区生态环境知识资源中心(Arid): 华北平原典型干旱年土壤水分及灌溉特征遥感分析

Arid

	华北平原典型干旱年土壤水分及灌溉特征遥感分析
其他题名	Soil moisture and irrigation analysis in the typical drought years of the North China Plain using remote sensing data
	安淳淳 1; 王飞 1; 焦俏 2; 张雨果 2
来源期刊	中国水土保持科学
ISSN	1672-3007
出版年	2016
卷号	14 期号:5 页码:123-129
中文摘要	华北平原作为我国的粮食主产区,土壤水分是制约作物生长的主要限制因子。本文首次运用土壤水分指数数据,对华北平原土壤水分以及灌溉特征进行空间分析,旨在为区域尺度农田旱情以及农作物产量的实时监测与预报提供相关参考。研究基于1993-2002年华北平原逐旬降雨数据和主动微波遥感反演的土壤水分指数数据,应用地统计分析方法,分析典型干旱年(1999年)该区表层土壤水分时空变异特征,并提取和分析小麦生长期内的灌溉信息;通过对逐旬的降水和土壤水分数据的空间叠置分析,提取区域内的灌溉信息。结果表明:1999年降水量比多年(1993-2002年)平均量少约140 mm;1999年土壤水分变化与降水变化整体保持一致,低于多年平均水平,春季和夏季,土壤水分减少尤为明显,土壤干旱非常普遍;小麦生长期内,大部分地区均存在不同程度的灌溉,其中中部地区灌溉次数最少,占研究区面积的65%左右的南部和北部地区灌溉次数多为2~3旬次。采用降水量和遥感水分监测数据,可以分析土壤水分变化的原因,提取灌溉的范围和时间特征,并可为旱情遥感监测提供科学参考。
英文摘要	[Background] Soil moisture is one of the most important components of soil, it plays a critical role in the process of soil formation. Moreover, soil moisture is the main source of crop water, and is one of the most crucial parameters for the agriculture, meteorology and hydrology studies. As the important agricultural region in China, in addition to the precipitation recharge, soil moisture in the North China Plain (NCP) is also largely affected by irrigation. How to monitor and analyze surface soil moisture, drought and irrigation of a wide range using remote sensing data, has a especially important value. Studies on soil moisture and irrigation information can provide better understanding about the drought. [Methods] On the basis of 10-day’s precipitation data, active microwave remote sensing inversion data - soil moisture index (SWI) data, combined with geo-statistical analysis methods, the spatial and temporal variation of surface soil moisture under precipitation drought in the NCP was analyzed and irrigation information in the main growing season of winter wheat was extracted by the method of spatial overlay analysis. [Results] 1) There were some differences in the amount and distribution of precipitation between 1999 and 1993-2002. Precipitation in June, July and August of 1999 was 50 mm lower than the average of 10 years (1993-2002), precipitation in September and October of 1999 was a little higher than the average of 10 years (1993-2002); precipitation in 1999 was more evenly distributed than annual average of 1993-2002. Precipitation in the NCP in 1999 was 140 mm less than the average of 10 years (1993-2002). 2) The change of soil moisture was consistent with the change of precipitation, which had regular fluctuation. The SWI in 1999 was lower than the average of 10 years (1993-2002), especially from March to September, which was consistent with variation of precipitation; the SWI decreased remarkably in spring and summer, which caused the soil drought to some extent. The differences of SWI between 1999 and 1993-2002 were different in different regions; the differences of soil moisture content in different stages was significant in the same area. 3) Most areas in the NCP in 1999 were irrigated in different degrees in the main growing season of winter wheat; the irrigation times in the middle part was the least, and there existed two or three rounds of irrigation in the northern and southern parts, which accounted approximately 65% of the total study area. The irrigation cells were 79.69% same with extracted result using land use data in 2000. [Conclusions] The decrease of precipitation in 1999 had an effect on variation of SWI. The soil moisture in 1999 decreased, which was consistent with the change of precipitation, indicating the arid characteristic of soil. There existed different degrees of irrigation in the NCP in 1999. The study results and methods may provide references for the agricultural drought monitoring based on remote sensing.
中文关键词	土壤水分 ; 时空变异特征 ; 降水 ; 灌溉 ; 华北平原
英文关键词	soil moisture spatial and temporal variation characteristics precipitation irrigation North China Plain
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5839365
来源机构	西北农林科技大学 ; 中国科学院水利部水土保持研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235505
作者单位	1.中国科学院水利部水土保持研究所, 杨凌, 陕西 712100, 中国; 2.西北农林科技大学资源与环境学院, 杨凌, 陕西 712100, 中国
推荐引用方式 GB/T 7714	安淳淳,王飞,焦俏,等. 华北平原典型干旱年土壤水分及灌溉特征遥感分析[J]. 西北农林科技大学, 中国科学院水利部水土保持研究所,2016,14(5):123-129.
APA	安淳淳,王飞,焦俏,&张雨果.(2016).华北平原典型干旱年土壤水分及灌溉特征遥感分析.中国水土保持科学,14(5),123-129.
MLA	安淳淳,et al."华北平原典型干旱年土壤水分及灌溉特征遥感分析".中国水土保持科学 14.5(2016):123-129.