Recurrence quantification analysis (RQA) and cross recurrence plot (CRP) are used to analyze the relationship between the normalized difference vegetation index (NDVI) and climatic factors in the Southwest and Southeast Monsoon Regions in Yunnan longitudinal range-gorge region (LRGR). Results show that in the Southwest Monsoon Region the NDVI series has a higher certainty than that in the Southeast Monsoon Region. The coupling relationships of NDVI series in the two regions are between a completely random series and a deterministic series with noise. The two NDVI series have low synchronization in general, especially in the period 1987?1989 and 1991?1993. The NDVI series of the Southwest Monsoon Region lags behind that of the Southeast Monsoon Region. According to the CRP indices, the similarity, persistence time and stability of the coupling relationship between NDVI and precipitation series in the Southwest Monsoon Region are better than that of the Southeast Monsoon Region. Both the NDVI series and temperature series have similar trends. However, the difference of the CRP indices between the two regions is smaller. It is suggested that the interaction pattern of NDVI and temperatures has a smaller difference between the two regions.

Being sustainable both on spatial and temporal dimensions, sustainable land use system is a typically complicated system composed by natural, social and economical components, which has special attributes of systematic complication, structural openness, spatio-temporal dynamics and multi-objects. Driving Force-State-Response analysis method is useful to probe into multi-act and dynamics of its components. Sustainability assessment is the core to sustainable land use study. In this paper, the authors apply Driving Force-State-Response analysis method to construct assessing indicator system, which can be classified into status quo and response indicators, composed by natural, social, economical and technical aspects. Then the authors design assessing process on sustainable land use. At last, the indicator system and process are applied in Tangshan Region from 1991 to 1999. The results show that the general sustainable degree of land use in the study case has been rising, which is resulted from great economic growth and natural cost.