基于MODIS NPP的2006—2015年三江源区产草量时空变化研究

doi:10.11849/zrzyxb.20161033

自然资源学报 ›› 2017, Vol. 32 ›› Issue (11): 1857-1868.doi: 10.11849/zrzyxb.20161033

基于MODIS NPP的2006—2015年三江源区产草量时空变化研究

吕鑫^{1, 2}, 王卷乐^{1, 5, *}, 康海军³, 赵强^{1, 2}, 韩雪华^{1, 4}, 王玉洁¹

1. 中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室,北京 100101;
2. 中国矿业大学（北京）地球科学与测绘工程学院,北京 100083;
3. 青海省草原总站,西宁 810008;
4. 中国科学院大学,北京 100049;
5. 江苏省地理信息资源开发与利用协同创新中心,南京 210023

收稿日期:2016-09-26 修回日期:2017-01-14 出版日期:2017-11-20 发布日期:2017-11-20
通讯作者: 王卷乐（1976- ）,男,河南洛阳人,博士,研究员,研究方向为地理信息共享与遥感应用。 E-mail:wangjl@igsnrr.ac.cn
作者简介:吕鑫（1993- ）,男,山东梁山人,硕士,研究方向为3S集成与工程应用。E-mail:lx@lreis.ac.cn
基金资助:
中国工程科技知识中心建设项目（CKCEST-2016-3-7）; 科技基础性工作专项项目（2011FY110400）; 科技基础性工作专项项目（2013FY114600）

Spatio-temporal Changes of Grassland Production Based on MODIS NPP in the Three-River Source Region from 2006 to 2015

LÜ Xin^{1, 2}, WANG Juan-le^{1, 5}, KANG Hai-jun³, ZHAO Qiang^{1, 2}, HAN Xue-hua^{1, 4}, WANG Yu-jie¹

1. State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
2. College of Geoscience and Surveying Engineering, China University of Mining & Technology, Beijing 100083, China;
3. Qinghai Provincial Grassland Station, Xining 810008, China;
4. University of Chinese Academy of Sciences, Beijing 100049, China;
5. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China

Received:2016-09-26 Revised:2017-01-14 Online:2017-11-20 Published:2017-11-20
Supported by:
Construction Project of China Knowledge Center for Engineering Sciences and Technology, No.CKCEST-2016-3-7; Science & Technology Basic Research Program of China, No.2011FY110400; Science & Technology Basic Research Program of China, No.2013FY114600

摘要/Abstract

摘要： 草地既是高原地区重要的生态屏障,也是维系当地人民生产生活的自然资源,准确估算本区域的产草量,可为区域资源开发利用、社会经济可持续发展决策提供科学参考。论文基于MODIS遥感影像获得不同分辨率的NDVI、EVI和NPP产品,结合三江源区监测点的产草量地面实测数据,利用统计分析方法分别建立多种产草量遥感估算模型。利用择优选取的估产模型进行区域适用性评价和模型反演,研究三江源区产草量在2006—2015年的时空分布情况。研究结果表明,基于MOD17A2H NPP的一元线性模型的估算精度相对较高,三江源区的产草量（单产）呈东多西少、自东南向西北逐渐减少的空间分布特点。2006—2013年的产草量（总量）整体呈上升趋势,2013年的产草量（总量）达到3 869.43×10⁴ t,产草量（总量）自2014年开始降低,2015产草量（总量）为2 069.07×10⁴ t。

关键词: MODIS, 产草量, 净初级生产力, 三江源区, 遥感反演

Abstract: The grassland is not only the important ecological barrier in plateau region, but also the natural pasture to maintain the local people's living. The accurate estimation of grass production could provide scientific basis for informed decision-making on regional resource exploitation and socio-economic sustainable development. In this paper, the Three-River Source Region in Tibetan Plateau was selected as the research area. Estimation models of grassland production were established using statistical analysis method based on NDVI, EVI and NPP from NASA's MODIS remote sensing products and measured data. The general grassland production in the Three-River Source Region from 2006 to 2015 was retrieved with these models. The result shows that the linear model based on MOD17A2H NPP is the best model. In the Three-River Source Region, the grassland production (per unit yield) decreases from east to west and from southeast to northwest gradually. The grassland production (total yield) was increasing from 2006 to 2013 and then began to decrease. The annual grassland production (total yield) in 2013 was the highest and that in 2015 was the lowest. The annual grassland production (total yield) was 3 869.43×10⁴ t in 2013, while the annual grassland production (total yield) was 2 069.07×10⁴ t in 2015.

Key words: grassland production, MODIS, net primary productivity, remote sensing inversion, the Three-River Source Region

中图分类号:

S812

吕鑫, 王卷乐, 康海军, 赵强, 韩雪华, 王玉洁. 基于MODIS NPP的2006—2015年三江源区产草量时空变化研究[J]. 自然资源学报, 2017, 32(11): 1857-1868.

LÜ Xin, WANG Juan-le, KANG Hai-jun, ZHAO Qiang, HAN Xue-hua, WANG Yu-jie. Spatio-temporal Changes of Grassland Production Based on MODIS NPP in the Three-River Source Region from 2006 to 2015[J]. JOURNAL OF NATURAL RESOURCES, 2017, 32(11): 1857-1868.

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基于MODIS NPP的2006—2015年三江源区产草量时空变化研究

Spatio-temporal Changes of Grassland Production Based on MODIS NPP in the Three-River Source Region from 2006 to 2015

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