References:
     [1] National Bureau of Statistics. China Statistical Yearbook (2002-2021) [DB/OL]. https://www.stats.gov.cn/sj/ndsj/.
     [2] Ministry of Agriculture and Rural Affairs of China. China Agricultural Statistical Yearbook (1999-2019) [M]. China Agriculture Press, 2000-2020.
     [3] Editorial Board of China Animal Husbandry and Veterinary Yearbook. China Animal Husbandry and Veterinary Yearbook (2001-2021) [M]. Beijing: China Agriculture Press, 2001-2021.
     [4] Running, S., Mu, Q., Zhao, M. MOD17A2H MODIS/Terra Gross Primary Productivity 8-Day L4 Global 500m SIN Grid V006 [DS/OL]. NASA EOSDIS Land Processes Distributed Active Archive Center, 2015. (2018-09-05) [2023-07-28]. https://doi.org/10.5067/MODIS/MOD17A2H.006.
     [5] Su, D. X. The compilation and study of the grassland resource map of China on the scale of 1:1,000,000 [J]. Journal of Natural Resources, 1996, 11(1): 75-83.
     [6] Ministry of Agriculture of the Peoples Republic of China. Calculation of rangeland carrying capacity (NY/T 635-2015) [S]. Beijing: Standard Press of China, 2015.
     [7] Deng, X. Z., Gibson, J., Wang, P. Quantitative measurements of the interaction between net primary productivity and livestock production in Qinghai Province based on data fusion technique [J]. Journal of Cleaner Production, 2017(142): 758-766.
     [8] Zheng, Z., Qi, Y., Pan, X. D., et al. Estimating the grassland NPP in Qinghai Lake Basin based on WRF model data and CASA model [J]. Journal of Glaciology and Geocryology, 2013, 35(2): 465-474. DOI: 10.7522/j.issn.1000-0240.2013.0055.
     [9] Boundary data for natural reserves in China [DB/OL]. Resource and Environmental Science Data Platform. [2023-07-28]. https://www.resdc.cn/data.aspx?DATAID =272.
     [10] De Leeuw, J., Rizayeva, A., Namazov, E., et al. Application of the MODIS MOD17 net primary production product in grassland carrying capacity assessment [J]. International Journal of Applied Earth Observation and Geoinformation, 2019(78): 66-76.
     [11] Reeves, M. C., Zhao, M. S., Running, S. W. Applying improved estimates of MODIS productivity to characterize grassland vegetation dynamics [J]. Rangeland Ecology & Management, 2006, 59(1): 1-10. DOI: 10.2307/3899838.
     [12] Turner, D. P., Ritts, W. D., Cohen, W. B., et al. Evaluation of MODIS NPP and GPP products across multiple biomes [J]. Remote Sensing of Environment, 2006, 102(3/4): 282-292. DOI: 10.1016/j.rse.2006.02.017.
     [13] Huang, L., Zhai, J., Zhu, P., et al. Spatiotemporal evolution characteristics of livestock-carrying pressure in China and its implications for grassland ecosystem conservation pattern [J]. Acta Geographica Sinica, 2020, 75(11): 2396-2407. DOI: 10.11821/dlxb202011009.
     [14] Shen, H. H., Zhu, Y. K., Zhao, X., et al. Analysis of current grassland resources in China [J]. Chinese Science Bulletin, 2016, 61(2): 139-154.
     [15] Li, S. L., Wang, L. F., Song, Q. L., et al. Analysis of animal husbandry climate resources in Greater Hinggan Mountains [J]. Heilongjiang Meteorology, 2002, 19(4): 28-29, 35. DOI: 10.3969/j.issn.1002-252X.2002.04.009.
     [16] Daily station observation dataset of meteorological elements in China [DB/OL]. Resource and Environmental Science Data Platform. [2023-07-28]. https://www.resdc.cn/data.aspx?DATAID=230.
     [17] Zhang, Y. T., Pan, X. B., Xu, L., et al. Spatio-temporal variation of agricultural thermal resources at different critical temperatures in China's temperature zone [J]. Resources Science, 2017, 39(11): 12. DOI: 10.18402/resci.2017.11.09.
     [18] Wang, S. T. Statistical method on the beginning and end date of the stable daily average temperature passing through the limit temperature at all levels [J]. Meteorological Monthly, 1982, (6): 29-30. DOI: 10.7519/j.issn.1000-0526.1982.6.013.
     [19] Peng, G. Z. Characteristics of changes in the date of boundary temperature and climatic resources for animal husbandry on the Northwest Sichuan Plateau [J]. Resources and Environment in the Yangtze Basin, 2015, 24(4): 617-624.
     [20] Ge, B. J. An analysis of animal climatic resources of Gansu province [J]. Journal of Arid Meteorology, 1995(1): 18-22.
     [21] Qian, Z. C., Wu, L. W., Wang, J. T., et al. Evaluation of the implementation effect of grassland ecological protection subsidy and reward policy: Bibliometric analysis based on CNKI database [J]. Chinese Journal of Grassland, 2021, 43(8): 83-92. DOI: 10.16742/j.zgcdxb.20200309.
     [22] Robinson, T. P., Thornton, P. K., Franceschini, G., et al. Global livestock production systems [M]. Rome: Food and Agriculture Organization of the United Nations (FAO) and International Livestock Research Institute (ILRI), 2011.
     [23] Nine Agricultural Zones of China [DB/OL]. Resource and Environmental Science Data Platform. [2023-07-28]. https://www.resdc.cn/data.aspx?DATAID=275.
     [24] Six Regions of China [DB/OL]. Resource and Environmental Science Data Platform. [2023-07-28]. https://www.resdc.cn/data.aspx?DATAID=276.
     [25] Nine River Basins of China [DB/OL]. Resource and Environmental Science Data Platform. [2023-07-28]. https://www.resdc.cn/data.aspx?DATAID=141.
     [26] Fang, J. Y., Jing, H. C., Zhang, W. H., et al. The concept of /"Grass - based Livestock Husbandry/" and its practice in Hulun Buir, Inner Mongolia [J]. Chinese Science Bulletin, 2018, 63(17): 1619-1631.
     [27] Li, G., Sun, W.L., Zhang, H., et al.Balance between actual number of livestock and livestock carrying capacity of grassland after added forage of straw based on remote sensing in Tibetan Plateau[J].Transactions of the Chinese Society of Agricultural Engineering, 2014, 30(17): 200 - 211.DOI: 10.3969 / j.issn.1002 - 6819.2014.17.026.
     [28] Yang, M., Liang, S., Zhou, H., et al. Consumption in Non - Pastoral Regions Drove Three - Quarters of Forage-Livestock Conflicts in China[J].Environmental science & technology, 2023.DOI: 10.1021 / acs.est.3c00425.
     [29] Mo, X.G., Liu, W., Meng, C.C., et al. Variations of grassland yield and forage-livestock balance over the Tibetan Plateau, China[J].Chinese Journal of Applied Ecology, 2021, 32(7): 2415 - 2425.DOI: 10.13287 / j.1001 - 9332.202107.002.
     [30] Bi, Y.Y., Gao, C.Y., Wang, Y.J., et al. Estimation of straw resources in China[J].Transactions of the CSAE, 2009, 25(12): 211 - 217.DOI: 10.3969 / j.issn.1002 - 6819.2009.12.037.
     [31] Zhang, G., Lu, F., Zhao, H., et al. Residue usage and farmers' recognition and attitude toward residue retention in China's croplands[J]. Journal of Agro - Environment Science, 2017, 36(5): 981 - 988.DOI: 10.11654 / jaes.2016 - 1505.