Identifying determinants of spatio-temporal disparities in soil moisture of the Northern Hemisphere using a geographically optimal zones-based heterogeneity model

环境科学 空间异质性 含水量 空间生态学 空间变异性 水分 比例(比率) 共同空间格局 自然地理学 地理 生态学 地图学 地质学 气象学 统计 生物 数学 岩土工程
作者
Peng Luo,Yongze Song,Xin Huang,Hongliang Ma,Jin Liu,Yao Yao,Liqiu Meng
出处
期刊:Isprs Journal of Photogrammetry and Remote Sensing 卷期号:185: 111-128 被引量:42
标识
DOI:10.1016/j.isprsjprs.2022.01.009
摘要

Soil moisture is a fundamental ecological component for climate and hydrological studies. However, the distribution patterns of soil moisture are spatially heterogenous and influenced by multiple environmental factors. The knowledge is still limited in assessing the large-scale spatial heterogeneity of soil moisture in in situ data modelling, in situ network design, spatial down-scaling, and remote sensing-based soil moisture retrieval. Heterogeneity models are effective in characterizing spatial disparities, but they are not capable of examining the maximum regional disparities. To address this bottleneck, the authors of this study developed a geographically optimal zones-based heterogeneity (GOZH) model. By progressively optimizing geographical zones of soil moisture and quantifying the heterogeneity among zones, GOZH may help identify individual and interactive determinants of soil moisture across a large study area. It was applied to identify spatial determinants of in situ soil moisture data collected at 653 monitoring stations in the Northern Hemisphere in unfrozen and frozen seasons from April 2015 to December 2017, with only thawed data considered in both seasons. Correspondingly, a series of variables were derived from Google Earth Engine (GEE) remote sensing data. The results demonstrated the significant regional disparities of soil moisture, and the combinations of determinants are critically different among geographical zones and between unfrozen and frozen seasons. At a global scale, the combinations of determinants can explain about 48% of the spatial pattern of soil moisture. Spatial heterogeneity of soil moisture in frozen seasons is much more complex than that in unfrozen seasons regarding geographical zones and explanatory variables. The variability of soil moisture during unfrozen seasons can be more explainable than that during frozen seasons, which was a convincing evidence for previous studies that soil moisture predictions were mostly performed during unfrozen seasons. Primary variables that determine spatial patterns of soil moisture are changed from climate variables during the unfrozen season to geographical variables during the frozen season. Results show that GOZH model can effectively explore spatial determinants of soil moisture through avoiding the underestimation of individual variables, overestimation of multiple variables, and finely divide zones. The research findings from this study provide an in-depth understanding of the spatial heterogeneity of soil moisture and can be implemented in more effective in situ sampling network design, spatial down-scaling of soil moisture, and accurate inversion of surface parameters from the satellite data of soil moisture.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
soory完成签到,获得积分10
3秒前
宓天问完成签到,获得积分10
5秒前
5秒前
bluesky完成签到,获得积分10
6秒前
叽里呱啦完成签到 ,获得积分10
6秒前
Distance发布了新的文献求助10
8秒前
9秒前
9秒前
专注灵凡完成签到,获得积分10
9秒前
Stageruner完成签到,获得积分10
9秒前
kiyo_v完成签到,获得积分10
9秒前
黄超超发布了新的文献求助10
10秒前
落寞剑成完成签到 ,获得积分10
10秒前
七子完成签到,获得积分10
10秒前
klio完成签到 ,获得积分10
11秒前
zzx396完成签到,获得积分0
12秒前
one完成签到 ,获得积分10
13秒前
十五完成签到,获得积分10
13秒前
ptjam完成签到 ,获得积分10
14秒前
神勇的晟睿完成签到 ,获得积分10
15秒前
15秒前
曾珍完成签到 ,获得积分10
15秒前
Muhi完成签到,获得积分10
15秒前
15秒前
自带蓝牙的土豆完成签到 ,获得积分10
16秒前
青羽落霞完成签到 ,获得积分10
17秒前
抹颜完成签到,获得积分10
18秒前
量子星尘发布了新的文献求助10
22秒前
胡图图完成签到,获得积分10
23秒前
睡觉大王完成签到 ,获得积分10
24秒前
25秒前
25秒前
26秒前
26秒前
31秒前
玩命的十三完成签到 ,获得积分10
31秒前
寂寞的诗云完成签到,获得积分10
33秒前
我爱科研完成签到 ,获得积分10
33秒前
34秒前
Bin_Liu发布了新的文献求助10
35秒前
高分求助中
【提示信息,请勿应助】关于scihub 10000
Les Mantodea de Guyane: Insecta, Polyneoptera [The Mantids of French Guiana] 3000
徐淮辽南地区新元古代叠层石及生物地层 3000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Handbook of Industrial Diamonds.Vol2 1100
Global Eyelash Assessment scale (GEA) 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 550
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 4038184
求助须知:如何正确求助?哪些是违规求助? 3575908
关于积分的说明 11373872
捐赠科研通 3305715
什么是DOI,文献DOI怎么找? 1819255
邀请新用户注册赠送积分活动 892662
科研通“疑难数据库(出版商)”最低求助积分说明 815022