LIU Yangyang,REN Hanyu,ZHANG Zhaoying,et al.Temporal and Spatial Dynamic Pattern of Grassland Coverage and Its Influencing Factors in China[J].Research of Soil and Water Conservation,2022,29(02):221-230+242.
中国草地覆盖度时空动态格局及其影响因素
- Title:
- Temporal and Spatial Dynamic Pattern of Grassland Coverage and Its Influencing Factors in China
- 文章编号:
- 1005-3409(2022)02-0221-10
- Keywords:
- grassland coverage; different climatic regions; climate change; altitude gradient; aspect gradient
- 分类号:
- Q948.112
- 文献标志码:
- A
- 摘要:
- 为了探究近几十年来中国草地覆盖度的动态变化,基于多源遥感数据,采用像元二分模型模拟分析了1982—2016年中国草地覆盖度的时空动态格局,并从植被类型、地形要素、气候区及气候变化等角度分析了其主要影响因素。结果表明:35 a间中国草地覆盖度平均值为36.21%,呈极显著增加趋势(0.12%/a)。高山亚高山草甸、坡面草地及湿润地区、半干旱地区草地覆盖度的增加对于中国草地恢复具有重要贡献。草地覆盖度随海拔的升高呈降低趋势,DEM<500 m及3 500 m<DEM两个梯度上的草地覆盖度增长率较高。年际变化上,东南坡、西北坡和西南坡草地覆盖度增加率较高。空间上,草地覆盖度与气温呈现显著正相关的区域集中在新疆中部、西藏西部及青海省南部,而与降水呈显著正相关的区域集中在新疆中部和北部、西藏南部及内蒙古中东部地带。高山亚高山草甸、坡面草地及高山亚高山草地植被覆盖度的增加主要受气温控制,而平原草地、荒漠草地和草甸覆盖度的增加主要依赖于降水。干旱区草地覆盖度的限制因子为降水,而湿润地区草地覆盖度受气温控制。中国低海拔地区草地覆盖度对气温、降水依赖性均较强,这种依赖性随海拔升高减弱,中海拔地区草地生长主要依赖气温。
- Abstract:
- In order to explore the dynamic changes of grassland coverage in China in recent decades, based on multi-source remote sensing data, we used the pixel dichotomy model to quantitatively calculate the grassland coverage in China from 1982 to 2016, analyzed the temporal and spatial dynamic pattern of grassland coverage in China, and analyzed the influencing factors of grassland coverage from the perspectives of vegetation types, terrain elements, climate regions and climate change. The results showed that the average grassland coverage in China was 36.21% in the past 35 years, showing an extremely significant increase trend(0.12%/a). The increase of grassland coverage in alpine subalpine meadow, slope grassland, humid and semi-arid areas had an important contribution to grassland restoration in China. The increase rate of grassland coverage on DEM<500 m and 3 500 m<DEM was higher than that on southeast slope, northwest slope and southwest slope. The areas with significant positive correlation between grassland coverage and temperature concentrated in central Xinjiang, western Tibet and southern Qinghai Province, while the areas with significant positive correlation with precipitation concentrated in the central and northern Xinjiang, southern Tibet and central and eastern Inner Mongolia. The increase of vegetation coverage of alpine subalpine meadow, slope grassland and alpine subalpine grassland was mainly controlled by temperature, while that of plain grassland, desert grassland and meadow mainly depended on precipitation. The limiting factor of grassland growth in arid area was precipitation, while grassland coverage in humid area was controlled by temperature. Grassland coverage in low altitude areas of China was strongly dependent on temperature and precipitation, and this dependence decreased with the increase of altitude. The growth of grassland in middle altitude areas mainly depended on temperature.
参考文献/References:
[1] 李娅丽,汪小钦,陈芸芝,等.福建省地表温度与植被覆盖度的相关性分析[J].地球信息科学学报,2019,21(3):445-454.
[2] 孙睿,刘昌明,朱启疆.黄河流域植被覆盖度动态变化与降水的关系[J].地理学报,2001,56(6):667-672.
[3] 梁玲.植被覆盖度对黄土高原地区环境影响的数值模拟[D].兰州:中国科学院寒区旱区环境与工程研究所,2006.
[4] 李苗苗.植被覆盖度的遥感估算方法研究[D].北京:中国科学院研究生院,2003.
[5] 张斯琦.2000—2015年柴达木盆地植被覆盖度时空变化及其与环境因子的关系[D].石家庄:河北师范大学,2019.
[6] 裴志方,杨武年,吴彬,等.2000—2016年宁夏植被覆盖景观格局遥感动态分析[J].水土保持研究,2018,25(1):215-219.
[7] 赵明伟,王妮,施慧慧,等.2001—2015年中国陆地植被覆盖度时空变化及驱动力分析[J].干旱区地理,2019,42(2):104-111.
[8] Liu Y, Wang Q, Zhang Z, et al. Grassland dynamics in responses to climate variation and human activities in China from 2000 to 2013[J]. Science of the Total Environment, 2019,690:27-39.
[9] Mu S, Zhou S, Chen Y, et al. Assessing the impact of restoration-induced land conversion and management alternatives on net primary productivity in Inner Mongolian grassland, China[J]. Global & Planetary Change, 2013,108(3):29-41.
[10] 刘洋洋,章钊颖,同琳静,等.中国草地净初级生产力时空格局及其影响因素[J].生态学杂志,2020,39(2):349-363.
[11] 刘洋洋,王倩,杨悦,等.黄土高原草地净初级生产力时空动态及其影响因素[J].应用生态学报,2019,30(7):2309-2319.
[12] Liu Y, Yang Y, Wang Q, et al. Evaluating the responses of net primary productivity and carbon use efficiency of global grassland to climate variability along an aridity gradient[J]. Science of the Total Environment, 2019,652:671-682.
[13] Gang C, Zhou W, Wang Z, et al. Comparative assessment of grassland NPP dynamics in response to climate change in China, North America, Europe and Australia from 1981 to 2010[J]. Journal of Agronomy & Crop Science, 2015,201(1):57-68.
[14] Bai Y, Wu J, Xing Q, et al. Primary production and rain use efficiency across a precipitation gradient on the Mongolia Plateau[J]. Ecology, 2008,89(8):21-40.
[15] Chen Y, Mu S, Sun Z, et al. Grassland carbon sequestration ability in China: A new perspective from terrestrial aridity zones[J]. Rangeland Ecology & Management,2016,69(1):84-94.
[16] Gao Y, Zhou X, Wang Q, et al. Vegetation net primary productivity and its response to climate change during 2001—2008 in the Tibetan Plateau[J]. Science of the Total Environment, 2013,444:356-362.
[17] Chadwick O A, Matson P A. Carbon cycling and soil carbon storage in mesic to Wet Hawaiian Montane Forests[J]. Ecology, 2001,82(11):3182-3196.
[18] 孙海燕,万书波,李林,等.贺兰山西坡不同海拔梯度土壤活性有机碳分布特征及影响因子[J].水土保持学报,2014,28(4):194-199.
[19] 刘洋洋,王倩,杨悦,等.2000—2013年中国植被碳利用效率(CUE)时空变化及其与气象因素的关系[J].水土保持研究,2019,26(5):278-286.
[20] 杨佩国.基于土壤水分分布式动态模型的沙质荒漠化地区生产力估算[D].北京:中国农业大学,2004.
[21] 张俊佩.贵州石漠化地区主要造林树种耐旱特性及适应性评价[D].北京:中国林业科学研究院,2009.
[22] 聂莹莹.阳坡—阴坡生境梯度上植物群落物种多样性和地上生物量的变化特点[D].兰州:兰州大学,2010.
[23] 刘旻霞,刘洋洋,陈世伟,等.青藏高原东缘高寒草甸坡向梯度上植物光合生理特征研究[J].土壤与作物,2015,4(3):10-18.
[24] 刘旻霞.亚高寒草甸不同坡向植物光合生理和叶片形态差异[J].生态学报,2017,37(24):8526-8536.
相似文献/References:
[1]史晓亮,王馨爽.黄土高原草地覆盖度时空变化及其对气候变化的响应[J].水土保持研究,2018,25(04):189.
SHI Xiaoliang,WANG Xinshuang.Spatial and Temporal Variation of Vegetation Coverage and Its Response to Climate Change in the Loess Plateau[J].Research of Soil and Water Conservation,2018,25(02):189.
备注/Memo
收稿日期:2021-02-03 修回日期:2021-02-23
资助项目:国家自然科学基金(42107512); 西北农林科技大学博士科研启动金(2452020186); 陕西省林业科学院科技创新计划专项(SXLK2020-0204); 中国博士后科学基金(2020M683594)
第一作者:刘洋洋(1991—),男,河南洛阳人,副教授,主要从事草地遥感及陆地生态系统碳循环研究。E-mail:hnlylcbtks@163.com
通信作者:温仲明(1969—),男,陕西定边人,博士,研究员,主要从事草地生态学研究。E-mail:zmwen@ms.iswc.ac.cn