TY  - JOUR 
T1  - Gradient analysis of landscape pattern in the core area of the “Zhengzhou and Kaifeng Integration” at the landscape level
JO  - Anais da Academia Brasileira de Ciências
A1  - QINDONG, FAN
A1  - LIUKE, LIANG
A1  - HU, LI
SN  - 0001-3765
UL  - 10.1590/0001-3765202120181159
VL  - 93 
Y1  - 2021
PB  - Brasil 
ER  -