Xie, Z. 2004. A rotation and flip invariant algorithm for representing spatial continuity information of geographic images in content based image retrieval. Computers & Geosciences, 30 (9-10): 1093-1104

Bian, L. and Z. Xie 2004. A spatial dependence approach to retrieving industrial complexes from digital images. Professional Geographer, 56 (3): 381-393

Zheng, Y., Z. Xie, Y. GAO, H. Shimizu, L. Jiang, and Y. Yu 2004. Ecological restoration in northern china: germination characteristics of 9 key species in relation to air seeding. Belgian Journal of Botany, 136(2):129-138

Bian, L. and Xie, Z. 2001. Retrieving urban objects from digital aerial photographs using a wavelet transform approach and a spatial dependence approach. Technical report to NIMA.

Xie.Z. and F. Qiu. Issues on the use of variogram-based feature vectors in content based image retrieval. (accepted, Florida Geographer)

Zheng, Y., Z. Xie, Y. Yu, L. Jiang, H. Shimizu, G.R. Remmington and G. Zhou. Vegetation responses along environmental gradients on the Ordos plateau, China. Ecological Research (accepted)

Zheng, Y., Z. Xie, C. Roberts, L. Jiang, and H. Shimizu. Did climate drive ecosystem change and induce desertification in Otindag sandy land, China over the past 40 years? (accepted, Journal of Arid Environments)

Zheng, Y., Z. Xie, L. Jiang, H. Shimizu, and Sam Drake. Changes of Holdridge Life Zone Diversity in Xinjiang Uygur Autonomous Region (XUAR) of China over the Past Forty Years. (accepted, Journal of Arid Environments)

Xie, Z. and L. Bian. Using spatial continuity and discontinuity information for content based geographic image retrieval. (submitted to Geocarto International).