摘要
随着城镇化发展和农业产业化升级,耕地景观功能由单一的生产功能向经济功能、生态功能、文化功能拓展,耕地景观多功能性成为新的学术热点。已有研究往往侧重于探讨耕地功能的多指数耦合,缺乏耕地景观多重功能空间定量化与相互关联的分析。以京津冀地区为研究区,对耕地景观的粮食供给功能、生境维持功能、景观连通功能、土壤保持功能、景观美学功能和人口承载功能六项功能及其冷热点聚集区分别空间定量化,评价县域尺度耕地景观多功能性,并识别耕地景观多种功能的空间关联。研究结果表明,京津冀中部平原地区粮食供给功能显著,南部平原地区景观连通功能突出,燕山与太行山山脉土壤保持功能、维持生境功能最高,山前平原地带人口承载功能相对重要。2010年京津冀地区耕地景观功能总体呈现南高北低的分布格局,但功能高低值分布规律差异明显,各功能全部处于高值或低值的样本极少;耕地景观不同功能间的权衡与协同关系数量相当,景观连通功能与粮食供给功能呈现明显协同关系,而与土壤保持功能呈现较强权衡关联。
With the development of urbanization and the upgrade of agricultural industrialization, farmland landscape function has developed from a single production function to the function bundle of the economic function, ecological function and cultural function. Thus the farmland landscape multifunctionality has become a hot topic in academic research. However, the existing studies discussed more on coupling the multi indices of farmland function. How to map different functions and the multi-scale correlation analysis on the farmland landscape functions is lack of attention. This study has selected the Beijing-Tianjin-Hebei area as study area, and calculated six farmland landscape functions spatially. The functions are respectively grain provision function, landscape connection function, soil conservation function, landscape scenery function, population capacity function, and habitat sustain function. Remote sensed net primary productivity （NPP）, Habitat Quality model in INVEST, Revised Universal Soil Loss Equation （RUSLE） model, Integral Index of Connectivity （IIC）, demographic census data, and Relief Degree of Land Surface （RDLS） are used to quantify these functions. The farmland landscape multifunctionality is quantified by hot spot identification and spatial overlay using spatial antocorrelation method. The result shows that the grain provision function is significant in the middle plain; the landscape connection function is prominent in the south plain; both of the soil conservation function and the habitat sustain function are high in the Yan Mountain and Taihang Mountain; the population capacity function near Beijing City is relatively important. The spatial distribution of different farmland landscape functions differs a lot in Beijing-Tianjin-Hebei Area in the year of 2010. The Beijing-Tianjing-Heibei area has a higher distribution of farmland landscape multifunctionality in the south than the north at county level. There are few counties in high value of all functions. The trade-off and synergy
出处
《生态学报》
CAS
CSCD
北大核心
2016年第8期2274-2285,共12页
Acta Ecologica Sinica
基金
国家自然科学基金重点项目(41130534)
关键词
耕地景观
景观多功能性
空间关联
热点分析
farmland landscape
landscape muhifunctionality
spatial correlation
hot-spot analysis
