[1]Brent N H, 1986.Characteristics of maximum-value composite images from temporal AVHRR data[J].Int J Remote Sens, 7(11):1417-1434.
[2]Fang J, Song Y, Liu H, et al, 2002.Vegetation-climate relationship and its application in the division of vegetation zone in China[J].Acta Botanica Sinica, 44(9):1105-1122.
[3]Feng X, Fu B, Lu N, et al, 2013.How ecological restoration alters ecosystem services:An analysis of carbon sequestration in China's Loess Plateau[J].Scientific Reports, 3(5):2846.
[4]Mohammad A G, Adam M A, 2010.The impact of vegetative cover type on runoff and soil erosion under different land uses[J].Catena, 81(2):97-103.
[5]Paruelo J M, Epstein H E, Lauenroth W K, et al, 1997.ANPP estimates from NDVI for the Central Grassland Region of the United States[J].Ecology, 78(3):953-958.
[6]Salim H A, Chen X L, Gong J Y, 2008.Analysis of Sudan vegetation dynamics using NOAA-AVHRR NDVI data from 1982-1993[J].Asian J Earth Sci, 1(1):1-15.
[7]Vicente-Serrano S M, Beguer A S, López-Moreno J I, 2010.A multiscalar drought index sensitive to global warming:The standardized precipitation evapotranspiration index[J].J Climate, 23(7):1696-1718.
[8]Wang Q, Zhang Q P, Zhou W, 2012.Grassland coverage changes and analysis of the driving forces in Maqu county[J].Physics Procedia, 33:1292-1297.
[9]Wang Z X, 2017.Boundary data of Loess Plateau region[J].Journal of Global Change Data & Discovery, 1(1):113.DOI:10.3974/geodp.2017.01.17.
[10]He X B, Li Z B, Hao M D, et al, 2003.Down-scale analysis for water scarcity in response to soil-water conservation on Loess Plateau of China[J].Agriculture, Ecosystems & Environment, 94(3):355-361.
[11]Xin Z B, Xu J X, Wei Z, 2008.Spatiotemporal variations of vegetation cover on the Chinese Loess Plateau (1981-2006):Impacts of climate changes and human activities[J].Sci China (Earth Sci), 51(1):67-78.
[12]Yan J, Chen B, Fang S, et al, 2012.The response of vegetation index to drought:Taking the extreme drought disaster between 2009 and 2010 in Southwest China as an example[J].J Remote Sens, 16(4):720-737.
[13]Young S S, Wang C Y, 2001.Land-cover change analysis of China using global-scale Pathfinder AVHRR Landcover (PAL) data, 1982-1992[J].Int J Remote Sens, 22(8):1457-1477.
[14]Zhang B, Wu P, Zhao X, et al, 2012.Drought variation trends in different subregions of the Chinese Loess Plateau over the past four decades[J].Agricultural Water Management, 115(115):167-177.
[15]Zhang B, Wu P, Zhao X, et al, 2014.Spatiotemporal analysis of climate variability (1971-2010) in spring and summer on the Loess Plateau, China[J].Hydrological Processes, 28(4):1689-1702.
[16]Chen F J, 2011.Land use/cover changes and its driving force research in last 30 years in Changwu county[D].Yangling: Northwest A &amp; F University, 1-56.<br/>陈凤娟, 2011.近30年来长武县土地利用/覆盖变化及其驱动力研究[D].杨凌: 西北农林科技大学, 1-56.
[17]Chen X B, Chen X N, Su Q, 2007.Study on successive policy of returning farm land to forest engineering of Gansu Province[J].Journal of Gansu Forestry Science and Technology, 32(3):33-35.<br/>陈雪斌, 陈晓妮, 苏强, 2007.甘肃省退耕还林后续政策调查研究[J].甘肃林业科技, 32(3):33-35.
[18]The leading group office of the project of returning farmland to forestry in Gansu Province, 2006.Report on the project of returning farmland to forestry and the follow-up policy research[R].2006-6-24.<br/>甘肃省退耕还林工程建设领导小组办公室, 2006.甘肃省退耕还林工程建设及后续政策调研情况汇报[R].2006-6-24.
[19]Guo N, Zhu Y J, Wang J M, et al, 2008.The relationship between NDVI and climate elements for 22 years in different vegetation areas of Northwest China[J].J Plant Ecology, 32(2):319-327.<br/>郭铌, 朱燕君, 王介民, 等, 2008.近22年来西北不同类型植被NDVI变化与气候因子的关系[J].植物生态学报, 32(2):319-327.
[20]Li Z C, Wei Z G, Wen J, et al, 2008.Analyses on climate variation characteristics over the Loess Plateau in recent 50 years[J].J Arid Resour Environ, 22(3):57-62.<br/>李振朝, 韦志刚, 文军, 等, 2008.近50年黄土高原气候变化特征分析[J].干旱区资源与环境, 22(3):57-62.
[21]Ningxia Hui Autonomous Region western development office.Report on Ningxia Hui Autonomous Region of returning farmland to forest and returning grazing land to grass[R].2006-6-16.<br/>宁夏回族自治区西部开发办.关于宁夏实施退耕还林、退牧还草工程有关情况汇报[R].2006-6-16.
[22]Qian Z A, Song M H, Wu T W, et al, 2017a.Review of advances in world arid climate research (Ⅰ):Development and contribution of some main dryland countries and the UN[J].Plateau Meteor, 36(6):1433-1456.DOI:10.7522/j.issn.1000-0534.2017.00075.<br/>钱正安, 宋敏红, 吴统文, 等, 2017a.世界干旱气候研究动态及进展综述(Ⅰ):若干主要干旱区国家的研究动态及联合国的贡献[J].高原气象, 36(6):1433-1456.
[23]Qian Z A, Song M H, Wu T W, et al, 2017b.Review of advances in world dryland climate research (Ⅱ):Main investigation progress[J].Plateau Meteor, 36(6):1457-1476.DOI:10.7522/j.issn.1000-0534.2017.00076.<br/>钱正安, 宋敏红, 吴统文, 等, 2017b.世界干旱气候研究动态及进展综述(Ⅱ):主要研究进展[J].高原气象, 36(6):1457-1476.
[24]Song Y, Ma M G, 2007.Study on vegetation cover change in Northwest China based on SPOT vegetation data[J].Journal of Desert Research, 27(1):89-93.<br/>宋怡, 马明国, 2007.基于SPOT VEGETATION数据的中国西北植被覆盖变化分析[J].中国沙漠, 27(1):89-93.
[25]Sun H Y, Wang C Y, Niu Z, et al, 1998.Analysis of the vegetation cover change and the relationship between NDVI and environmental factor by using NOAA time series data[J].J Remote Sens, 2(3):204-210.<br/>孙红雨, 王长耀, 牛铮, 等, 1998.中国地表植被覆盖变化及其与气候因子关系——基于NOAA时间序列数据分析[J].遥感学报, 2(3):204-210.
[26]Sun S Q, 1999.A study on the features of drought and flood in north China in recent 50 years and relations between them and global changes[J].Plateau Meteor, 18(4):541-551.<br/>孙淑清, 1999.近五十年来华北地区旱涝特征与全球变化的研究及对未来趋势的探讨[J].高原气象, 18(4):541-551.
[27]Wang C, Zhen L, Du B Z, et al, 2014.Assessment of the impact of Grain for Green project on farmers' livelihood in the Loess Plateau[J].Chinese Journal of Eco-Agriculture, 22(7):850-858.<br/>王超, 甄霖, 杜秉贞, 等, 2014.黄土高原典型区退耕还林还草工程实施效果实证分析[J].中国生态农业学报, 22(7):850-858.
[28]Wang D Y, Lü S H, Han B, et al, 2017.The characteristics of spring precipitation and their connections with the spring drought over the Loess Plateau during last three decades[J].Plateau Meteor, 36(2):395-406.DOI:10.7522/j.issn.1000-0534.2016.00121.<br/>王丹云, 吕世华, 韩博, 等, 2017.近30年黄土高原春季降水特征与春旱变化的关系[J].高原气象, 36(2):395-406.
[29]Wang G Q, Zhang C C, Liu J H, et al, 2006.Analyses on the variation of vegetation coverage and water/sediment reduction in the rich and coarse sediment area of the Yellow River basin[J].Journal of Sediment Research, 2(2):10-16.<br/>王光谦, 张长春, 刘家宏, 等, 2006.黄河流域多沙粗沙区植被覆盖变化与减水减沙效益分析[J].泥沙研究, 2(2):10-16.
[30]Wang L, Chen W, 2014.Applicability analysis of standardized precipitation evapotranspiration index in drought monitoring in China[J].Plateau Meteor, 33(2):423-431.DOI:10.7522/j.issn.1000-0534.2013.00048.<br/>王林, 陈文, 2014.标准化降水蒸散指数在中国干旱监测的适用性分析[J].高原气象, 33(2):423-431.
[31]Wang P, Li Y Q, Yan P, et al, 2005.Study on frequent occurrence of spring drought in Heilongjiang Province in recent years[J].J Natural Disaster, 14(3):95-98.<br/>王萍, 李廷全, 闫平, 等, 2005.近年黑龙江省春旱频繁发生的研究分析[J].自然灾害学报, 14(3):95-98.
[32]Wang Y Z, 2010.Evaluate effect of converting cultivated land to forest in north Shannxi Province of Loess Plateau[D].Yangling: Northwest A &amp; F University, 1-55.<br/>王耀宗, 2010.陕北黄土高原退耕还林还草工程生态效益评价[D].杨凌: 西北农林科技大学, 1-55.
[33]Wang Y R, Zhang Q, Jiang S B, 2011.A review of recent study advances in climatic environment on China Loess Plateau[J].Adv Meteor Sci Technol, 1(2):38-42.<br/>王毅荣, 张强, 江少波, 2011.黄土高原气候环境演变研究[J].气象科技进展, 1(2):38-42.
[34]Xie B N, Qin Z F, Wang Y, et al, 2014.Spatial and temporal variation in terrestrial net primary productivity om Chinese Loess Plateau and its influential factors[J].Transactions of the Chinese Society of Agricultural Engineering, 30(11):244-253.<br/>谢宝妮, 秦占飞, 王洋, 等, 2014.黄土高原植被净初级生产力时空变化及其影响因素[J].农业工程学报, 30(11):244-253.
[35]Xie B N, 2016.Vegetation dynamics and climate change on the Loess Plateau, China: 1982-2014[D].Yangling: Northwest A &amp; F University, 1-176.<br/>谢宝妮, 2016.黄土高原近30年植被覆盖变化及其对气候变化的响应[D].杨凌: 西北农林科技大学, 1-176.
[36]Xin B Z, Xu J X, Zheng W, 2007.Effects of climate change and human activities on vegetation cover change in the Loess Plateau[J].Science in China Press:Geoscience, 37(11):1504-1514.<br/>信忠保, 许炯心, 郑伟, 2007.气候变化和人类活动对黄土高原植被覆盖变化的影响[J].中国科学:地球科学, 37(11):1504-1514.
[37]Xu Y M, Zhang Y, Bai L, 2016.Study on the spatio-temporal variations of vegetation fraction in Zoige based on remote sensing data[J].Plateau Meteor, 35(3):643-650.DOI:10.7522/j.issn.1000-0534.2015.0040.<br/>徐永明, 张宇, 白琳, 2016.基于遥感数据监测若尔盖高原植被覆盖度变化[J].高原气象, 35(3):643-650.
[38]Ye Y H, Guo J Y, Wang F, 2004.The climate feature of spring precipitation on the Loess Plateau[J].Agricultural Research in the Arid Areas, 22(1):11-17.<br/>叶燕华, 郭江勇, 王风, 2004.黄土高原春季降水的气候特征分析[J].干旱地区农业研究, 22(1):11-17.
[39]Zhang B Q, Wu P T, Zhao X N, 2011.Detecting and analysis of spatial and temporal variation of vegetation cover in the Loess Plateau during 1982-2009[J].Transactions of the Chinese Society Agricultural Engineering, 27(4):287-293.<br/>张宝庆, 吴普特, 赵西宁, 2011.近30a黄土高原植被覆盖时空演变监测与分析[J].农业工程学报, 27(4):287-293.
[40]Zhang Q, Han L Y, Zhang L Y, et al, 2014.Analysis on the character and management strategy of drought disaster and risk under the climate warming[J].Advance in Earth Science, 29(1):80-91.<br/>张强, 韩兰英, 张立阳, 等, 2014.论气候变暖背景下干旱和干旱灾害风险特征与管理策略[J].地球科学进展, 29(1):80-91.
[41]Zhang Q, Pan X B, Ma Z G, et al, 2009.Drought[M].Beijing:China Meteorological Press, 1-198.<br/>张强, 潘学标, 马柱国, 等, 2009.干旱[M].北京:气象出版社, 1-198.
[42]Zhang Q, Wang S, Zhang J, et al, 2008.The progresses on land surface processes and atmospheric boundary layer in arid regions[J].Adv Earth Sci, 23(2):167-173.<br/>张强, 王胜, 张杰, 等, 2008.关于黄土高原陆面过程及其观测试验研究[J].地球科学进展, 23(2):167-173.
[43]Zhang Q, Zhang L, Cui X C, et al, 2011.Progresses and challenge in drought assessment and monitoring[J].Adv Earth Sci, 26(7):763-778.<br/>张强, 张良, 崔显成, 等, 2011.干旱监测与评价技术的发展及其科学挑战[J].地球科学进展, 26(7):763-778.
[44]Zhang J T, Li B, 2003.Analysis of relationships between vegetation and climate variables in Loess Plateau[J].Acta Ecological Sinca, 23(1):82-89.<br/>张金屯, 李斌, 2003.黄土高原地区植被与气候的关系[J].生态学报, 23(1):82-89.
[45]Zhang T, Peng J, Liu Y X, et al, 2015.Eco-geographical regionalization in Loess Plateau based on the dynamic consistency of vegetation[J].Geographical Research, 34(9):1643-1661.<br/>张甜, 彭建, 刘焱序, 等, 2015.基于植被动态的黄土高原生态地理分区[J].地理研究, 34(9):1643-1661.
[46]Zhang W S, 2014.NDVI change and its suitability in land use change detection on Loess Plateau in Shaan-Gan-Ning region[D].Beijing: Research Center of Soil and Water Conservation and Ecological Environment, Chinese Academy of Sciences and Ministry of Education, 1-77.<br/>张文帅, 2014.陕甘宁黄土高原区NDVI变化及其在土地利用变化检测中的适宜性[D].北京: 中国科学院研究生院(教育部水土保持与生态环境研究中心), 1-77.
[47]Zhao W Z, Cheng G D, 2001.Review on some problems of ecological hydrological process in arid area[J].Chinese Sci Bull, 46(22):1851-1857.<br/>赵文智, 程国栋, 2001.干旱区生态水文过程研究若干问题评述[J].科学通报, 46(22):1851-1857.
[48]Editorial board of the vegetation map of China, Chinese Academy of Science, 2001.Atlas of Chinese vegetation 1: 1 000 000[C]//Beijing: Science Press.<br/>中国科学院中国植被图编辑委员会, 2001.中国植被图集1: 1 000 000[C]//北京: 科学出版社.
[49]Zhu D, 2008.Elementary study on the models and the sustainable eco-economy about the Returning Farmland to Forestry or Pasture (RFFP) in Loess Plateau of China[D].Lanzhou: Lanzhou University, 1-53.<br/>朱丹, 2008.黄土高原地区退耕还林还草模式及可持续发展研究[D].兰州: 兰州大学, 1-53.
[50]Zhu F M, 2001.Technological countermeasures for rehabilitation of ecological environment in Loess Plateau in Shaanxi Province[D].Yangling: Northwest A &amp; F University, 1-79.<br/>朱芬萌, 2001.陕西黄土高原生态环境重建技术对策研究[D].杨凌: 西北农林科技大学, 1-79.