青藏高原草地产量与草畜平衡变化

doi:10.13287/j.1001-9332.202107.002

应用生态学报 ›› 2021, Vol. 32 ›› Issue (7): 2415-2425.doi: 10.13287/j.1001-9332.202107.002

青藏高原草地产量与草畜平衡变化

莫兴国^1,2*, 刘文^1,2, 孟铖铖^1,2, 胡实¹, 刘苏峡^1,2, 林忠辉¹

¹中国科学院地理科学与资源研究所陆地水循环及地表过程重点实验室, 北京 100101;
²中国科学院大学资源与环境学院/中丹学院, 北京 100049

收稿日期:2021-01-07 修回日期:2021-03-18 出版日期:2021-07-15 发布日期:2022-01-15
通讯作者: *moxg@igsnrr.ac.cn
作者简介:莫兴国,男,1966年生,研究员。主要从事生态水文过程研究。E-mail:moxg@igsnrr.ac.cn
基金资助:
中国科学院战略性先导科技专项(XDA20040301)

Variations of forage yield and forage-livestock balance in grasslands over the Tibetan Pla-teau, China

MO Xing-guo^1,2*, LIU Wen^1,2, MENG Cheng-cheng^1,2, HU Shi¹, LIU Su-xia^1,2, LIN Zhong-hui¹

¹Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
²College of Resources and Environment/Sino-Danish Center, University of Chinese Academy of Sciences, Beijing 100049, China

Received:2021-01-07 Revised:2021-03-18 Online:2021-07-15 Published:2022-01-15
Contact: *moxg@igsnrr.ac.cn
Supported by:
Strategie Priority Research Program of the Chinese Academy of Sciences (XDA20040301).

摘要/Abstract

摘要： 深入了解青藏高原草地生产力与草畜平衡状态的变化,是青藏高原生态屏障建设和生态环境保护的基础。利用遥感植被指数和叶面积指数产品,基于VIP生态水文过程模型,模拟分析了青藏高原2000—2018年间草地生产力的时空格局,并结合同期农牧业统计资料,分析了青藏高原县域尺度草畜平衡状态的变化。结果表明:青藏高原草地多年平均净初级生产力(NPP)为158.4 g C·m^-2·a^-1;近20年来草地生产力上升趋势明显,显著上升面积的比例为44.7%。气候变暖、降水量增加、草本植物生长期延长和大气CO₂浓度升高是青藏高原草地生产力提高的主要驱动因素。基于草场产量估算的青藏高原平均理论载畜量为1.17 SU·hm^-2,年增长率为0.011 SU·hm^-2。2000年以来青藏高原草地超载情况总体趋于好转,严重超载县的面积比例已降至20%以下,其中超载程度较严重的地区,畜牧业的维持和发展主要依靠作物秸秆补饲。研究结果可为区域农牧业结构调整和生态环境保护提供科学依据。

关键词: 草地生产力, 理论载畜量, 超载程度, VIP模型

Abstract: An in-depth understanding of variations in grassland productivity and forage-livestock balance is the basis of ecological barrier construction and ecosystem conservation in the Qinghai-Tibetan Plateau. Using an ecohydrological process-based model VIP with remotely sensed vegetation index and leaf area index, we simulated the spatial and temporal variations of grassland productivity in the Tibetan Plateau in 2000-2018. The variations in the status of forage-livestock balance at the county level were analyzed, combining with agriculture and animal husbandry statistics in the same period. The results showed that the mean annual net primary productivity (NPP) of grassland in the Tibetan Plateau was 158.4 g C·m^-2·a^-1, which had increased significantly in the past 20 years, with a significant increase in 44.7% of the total area. Climate warming, increased precipitation, prolonged growing season, and elevated carbon dioxide concentration were main driving forces for grassland productivity. The mean theoretical livestock carrying capacity estimated based on pasture yield was 1.17 SU·hm^-2, with a growth rate of 0.011 SU·hm^-2. The situation of overgrazing in the Tibetan Plateau had generally improved since 2000. The proportion of counties with severe overgrazing had dropped to less than 20%. In areas with more severe overgrazing, animal husbandry's maintenance and development mainly relied on supplementation of crop straw. The results could provide a scientific basis for regional agricultural and animal husbandry structural adjustment and environmental protection.

Key words: grassland productivity, theoretical livestock carrying capacity, overgrazing degree, VIP ecohydrological dynamic model

莫兴国, 刘文, 孟铖铖, 胡实, 刘苏峡, 林忠辉. 青藏高原草地产量与草畜平衡变化[J]. 应用生态学报, 2021, 32(7): 2415-2425.

MO Xing-guo, LIU Wen, MENG Cheng-cheng, HU Shi, LIU Su-xia, LIN Zhong-hui. Variations of forage yield and forage-livestock balance in grasslands over the Tibetan Pla-teau, China[J]. Chinese Journal of Applied Ecology, 2021, 32(7): 2415-2425.

参考文献

[1] Sun J, Cheng GW, Li WP. Meta-analysis of relationships between environmental factors and aboveground biomass in the alpine grassland on the Tibetan Plateau. Biogeosciences, 2013, 10: 1707-1715
[2] Du M, Kawashima S, Yonemura S, et al. Mutual influence between human activities and climate change in the Tibetan Plateau during recent years. Global and Plane-tary Change, 2004, 41: 241-249
[3] Yi S, Wang X, Qin Y, et al. Responses of alpine grassland on Qinghai-Tibetan Plateau to climate warming and permafrost degradation: A modeling perspective. Environmental Research Letters, 2014, 9: 074014
[4] Chen B, Zhang X, Tao J, et al. The impact of climate change and anthropogenic activities on alpine grassland over the Qinghai-Tibet Plateau. Agricultural and Forest Meteorology, 2014, 189: 11-18
[5] Ding J, Yang T, Zhao Y, et al. Increasingly important role of atmospheric aridity on Tibetan alpine grasslands. Geophysical Research Letters, 2018, 45: 2852-2859
[6] Gao QZ, Wan YF, Xu HM, et al. Alpine grassland de-gradation index and its response to recent climate variability in Northern Tibet, China. Quaternary Internatio-nal, 2010, 226: 143-150
[7] Piao S, Tan K, Nan H, et al. Impacts of climate and CO₂ changes on the vegetation growth and carbon balance of Qinghai-Tibetan grasslands over the past five decades. Global and Planetary Change, 2012, 98-99: 73-80
[8] Klein JA, Hartee J, Zhao XQ. Experimental warming, not grazing, decreases rangeland quality on the Tibetan Plateau. Ecological Applications, 2007, 17: 541-557
[9] Lu X, Kelsey KC, Yan Y, et al. Effects of grazing on ecosystem structure and function of alpine grasslands in Qinghai-Tibetan Plateau: A synthesis. Ecosphere, 2017, 8: e01656. 10.1002/ecs2.1656
[10] Wu GL, Du GZ, Liu ZH, et al. Effect of fencing and grazing on a Kobresia-dominated meadow in the Qinghai-Tibetan Plateau. Plant and Soil, 2009, 319: 115-126
[11] 周国利, 程云湘, 马青青, 等. 牦牛放牧强度对青藏高原东缘高寒草甸群落结构与土壤理化性质的影响. 草业科学, 2019, 36(4): 1022-1031 [Zhou G-L, Cheng Y-X, Ma Q-Q, et al. Effects of grazing intensity on community structure and the soil's physical and chemical properties in an alpine meadow on the Eastern Qinghai-Tibet Plateau. Pratacultural Science, 2019, 36(4): 1022-1031]
[12] 泽让东科, 文勇立, 艾鷖, 等. 放牧对青藏高原高寒草地土壤和生物量的影响. 草业科学, 2016, 33(10): 1975-1980 [Tserang DM, Wen Y-L, Ai Y, et al. Impact of different grazing intensity on soil physical properties and plant biomass in Qinghai-Tibet Plateau alpine meadow ecosystem. Pratacultural Science, 2016, 33(10): 1975-1980]
[13] Mcsherry ME, Ritchie ME. Effects of grazing on grassland soil carbon: A global review. Global Change Bio-logy, 2013, 19: 1347-1357
[14] Liu S, Zamanian K, Schleuss PM, et al. Degradation of Tibetan grasslands: Consequences for carbon and nutrient cycles. Agriculture, Ecosystems & Environment, 2018, 252: 93-104
[15] 赵新全, 周华坤. 三江源区生态环境退化、恢复治理及其可持续发展. 中国科学院院刊, 2005, 20(6): 37-42 [Zhao X-Q, Zhou H-K. Eco-environmental degradation, vegetation regeneration and sustainable deve-lopment in the headwaters of three rivers on Tibetan Plateau. Bulletin of the Chinese Academy of Sciences, 2005, 20(6): 37-42]
[16] Li XL, Gao J, Brierley G, et al. Rangeland degradation on the Qinghai-Tibet Plateau: Implications for rehabilitation. Land Degradation & Development, 2013, 24: 72-80
[17] 杨正礼, 杨改河. 中国高寒草地生产潜力与载畜量研究. 资源科学, 2000(4): 72-77 [Yang Z-L, Yang G-H. Potential productivity and livestock carrying capacity of high-frigid grassland in China. Resources Science, 2000(4): 72-77]
[18] 畅慧勤, 徐文勇, 袁杰, 等. 西藏阿里草地资源现状及载畜量. 草业科学, 2012, 29(11): 1660-1664 [Chang H-Q, Xu W-Y, Yuan J, et al. Current situation of grassland resources and grazing capacity in Ali, Tibet. Pratacultural Science, 2012, 29(11): 1660-1664]
[19] 赵卫, 沈渭寿, 刘波, 等. 西藏地区草地承载力及其时空变化. 科学通报, 2015, 60(21): 2014-2028 [Zhao W, Shen W-S, Liu B, et al. Carrying capacity of grasslands and its spatiotemporal change in Tibet, China. Chinese Science Bulletin, 2015, 60(21): 2014-2028]
[20] 钱拴, 毛留喜, 侯英雨, 等. 青藏高原载畜能力及草畜平衡状况研究. 自然资源学报, 2007, 22(3): 389-397 [Qian S, Mao L-X, Hou Y-Y, et al. Livestock carrying capacity and balance between carrying capacity of grassland with added forage and actual livestock in the Qinghai-Tibet Plateau. Journal of Natural Resources, 2007, 22(3): 389-397]
[21] Yang S, Feng Q, Liang T, et al. Modeling grassland above-ground biomass based on artificial neural network and remote sensing in the Three-River Headwaters Region. Remote Sensing of Environment, 2018, 204: 448-455
[22] Ali I, Greifeneder F, Stamenkov J, et al. Review of machine learning approaches for biomass and soil moisture retrievals from remote sensing data. Remote Sensing, 2015, 7: 16398-16421
[23] 樊江文, 邵全琴, 王军邦, 等. 三江源草地载畜压力时空动态分析. 中国草地学报, 2011, 33(3): 64-72 [Fan J-W, Shao Q-Q, Wang J-B, et al. An analysis of temporal-spatial dynamics of grazing pressure on grassland in Three Rivers Headwater Region. Chinese Journal of Grassland, 2011, 33(3): 64-72]
[24] Wang W, Xing W, Shao Q, et al. Changes in reference evapotranspiration across the Tibetan Plateau: Observations and future projections based on statistical downscaling. Journal of Geophysical Research-Atmospheres, 2013, 118: 4049-4068
[25] Kuang X, Jiao JJ. Review on climate change on the Tibetan Plateau during the last half century. Journal of Geophysical Research-Atmospheres, 2016, 121: 3979-4007
[26] Mo XG, Liu SX, Meng DJ, et al. Exploring the interannual and spatial variations of ET and GPP with climate by a physical model and remote sensing data in a large basin of Northeast China. International Journal of Climatology, 2014, 34: 1945-1963
[27] Mo XG, Liu SX. Simulating evapotranspiration and photosynthesis of winter wheat over the growing season. Agricultural and Forest Meteorology, 2001, 109: 203-222
[28] Yang Y, Fang J, Ma W, et al. Large-scale pattern of biomass partitioning across China's grasslands. Global Ecology and Biogeography, 2010, 19: 268-277
[29] 方精云, 刘国华, 徐嵩龄. 中国陆地生态系统的碳库∥王庚辰, 温玉璞. 温室气体浓度和排放监测及相关过程. 北京: 中国环境科学出版社, 1996: 109-128 [Fang J-Y, Liu G-H, Xu S-L. Carbon reservoir of terrestrial ecosystem in China∥Wang G-C, Wen Y-P, eds. Monitoring and Relevant Process of Greenhouse Gas Concentration and Emission. Beijing: China Environment Sciences Press, 1996: 109-128]
[30] 中华人民共和国农业农村部. 天然草地合理载畜量的计算(NY/T 635—2015) [EB/OL]. (2015-05-27) [2020-02-08]. https://max.book118.com/html/2018/0824/8012056032001121.shtm [Ministry of Agriculture and Rural Affairs of the People's Republic of China. Calculation of Theoretical Livestock Carrying Capacity of Natural Grassland (NY/T 635-2015) [EB/OL]. (2015-05-27) [2020-02-08]. https://max.book118.com/html/2018/0824/8012056032001121.shtm]
[31] Wang Z, Zhang Y, Yang Y, et al. Quantitative assess the driving forces on the grassland degradation in the Qinghai-Tibet Plateau, in China. Ecological Informa-tics, 2016, 33: 32-44
[32] Yao Y, Wang X, Li Y, et al. Spatiotemporal pattern of gross primary productivity and its covariation with climate in China over the last thirty years. Global Change Biology, 2018, 24: 184-196
[33] Zhang Y, Qi W, Zhou C, et al. Spatial and temporal variability in the net primary production of alpine grassland on the Tibetan Plateau since 1982. Journal of Geographical Sciences, 2014, 24: 269-287
[34] 王琪, 吴成永, 陈克龙, 等. 基于MODIS NPP数据的青海湖流域产草量与载畜量估算研究. 生态科学, 2019, 38(4): 178-185 [Wang Q, Wu C-Y, Chen K-L, et al. Estimating grassland yield and carrying capa-city in Qinghai Lake Basin based on MODIS NPP data. Ecologic Science, 2019, 38(4): 178-185]
[35] 李文华, 赵新全, 张宪洲, 等. 青藏高原主要生态系统变化及其碳源/碳汇功能作用. 自然杂志, 2013, 35(3): 172-178 [Li W-H, Zhao X-Q, Zhang X-Z, et al. Change mechanism in main ecosystems and its effect of carbon source/sink function on the Qinghai-Tibetan Plateau. Chinese Journal of Nature, 2013, 35(3): 172-178]
[36] Zhang H, Fan J, Wang J, et al. Spatial and temporal variability of grassland yield and its response to climate change and anthropogenic activities on the Tibetan Pla-teau from 1988 to 2013. Ecological Indicators, 2018, 95: 141-151
[37] 李英年, 赵亮, 王勤学, 等. 高寒金露梅灌丛生物量及年周转量. 草地学报, 2006, 14(1): 72-76 [Li Y-N, Zhao L, Wang Q-X, et al. Estimation of biomass and annual turnover quantities of Potentilla froticosa shrub. Acta Agrestia Sinica, 2006, 14(1): 72-76]
[38] 李猛, 何永涛, 张林波, 等. 三江源草地ANPP变化特征及其与气候因子和载畜量的关系. 中国草地学报, 2017, 39(3): 49-56 [Li M, He Y-T, Zhang L-B, et al. Dynamics of grassland ANPP and its relationship with climate change and carrying capacity in the Three River Headwater region. Chinese Journal of Grassland, 2017, 39(3): 49-56]
[39] Galt D, Molinare F, Navarro J, et al. Grazing capacity and stocking rate. Rangelands, 2000, 22: 7-11
[40] 徐敏云. 草地载畜量研究进展: 中国草畜平衡研究困境与展望. 草业学报, 2014, 23(5): 321-329 [Xu M-Y. A review of grassland carrying capacity: Perspective and dilemma for research in China on ‘forage-livestock balance'. Acta Prataculturae Sinica, 2014, 23(5): 321-329]

青藏高原草地产量与草畜平衡变化

Variations of forage yield and forage-livestock balance in grasslands over the Tibetan Pla-teau, China

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